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Home > What's new calculators
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Educational Level
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Secondary school, High school and College |
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Program Purpose
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Provide step by step solutions of your problems using online calculators (online solvers)
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Problem Source
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Your textbook, etc |
1. Decimal number on 18.11.2024
1.1 Decimal to Fraction
1.2 Fraction to Decimal
1.3 Decimal to Percentage
1.4 Percentage to Decimal
1.5 Decimal to Standard form
1.6 Standard form to Decimal form
2. Expanded form of a number
3. Succeeding number
4. Preceding number
5. Even or odd number
6. Comparing Numbers (Greater Than Or Less Than)
7. Minimum number
8. Maximum number
9. Ascending, Descending order of numbers
10. Rounding Numbers
11. Classifying numbers (Rational,Irrational,Real,Natural,Integer)
12. Terminating or non terminating decimal expansion
13. Additive inverse
14. Multiplicative inverse
15. Opposite number
16. Reciprocal number
17. Absolute value of a number
18. Plotting numbers on a number line
19. Like and Unlike decimals
20. Convert unlike decimals to like decimals
21. +, -, *, / of numbers
22. Model +, - of numbers
23. Simplify expression
2. Rational Zeros Theorem to find all possible rational roots of a polynomial on 04.10.2024
3. Scientific notation on 16.08.2024
1. Convert Scientific notation to Decimal notation
2. Convert Decimal notation to Scientific notation
3. Add, subtract, multiply and divide of Scientific notation numbers
4. Fraction on 05.08.2024
1. Numerator and Denominator Fractions
2. Proper and Improper Fractions
3. Like and Unlike fractions
4. Model Fractions (Visual Fractions)
5. Simplify Fraction
6. Equivalent Fractions
7. How many eighths are equivalent to 1/2
8. Fraction to Decimal (Mixed Number to Decimal)
9. Decimal to Fraction (Decimal to Mixed Number)
10. Fraction to Percentage (Mixed Number to Percentage)
11. Percent to Fraction
12. Improper fraction to Mixed number
13. Mixed Number to Improper Fraction
14. Reciprocal of a fraction
15. LCD of fractions
16. Convert unlike fraction to like fraction
17. Comparing fractions
18. Ascending and descending order of fractions
19. Add, subtract, multiply and divide of Fractions
20. Add, subtract, multiply and divide of Mixed numbers
21. Visual Model for Adding, Subtracting of Fractions
22. Simplify fraction expression
5. Prime numbers on 26.06.2024
5.1 Is 31 a prime number
5.2 Which of the following is a prime number 13,48,49,23,45,47
5.3 Which of the following is a composite number 13,19,22,31
5.4 First 1000 prime numbers
5.5 5th prime number
5.6 Prime numbers from 1 to 1000
5.7 Greatest prime number between 1 and 100
5.8 What is the next 2 prime number after 37
5.9 What is the previous 2 prime number before 37
5.10 What is the largest 2 digit prime number
5.11 What is the smallest 4 digit prime number
5.12 Express 21 as the sum of three prime numbers
5.13 are 25 and 27 co-prime numbers
5.14 Find all co-prime numbers from 1 to 100
5.15 are 11 and 13 twin primes
5.16 Find all twin prime numbers between 1 to 100
6. Multiples of a number on 26.06.2024
6.1 Find Multiple of 8 using Multiplication method
6.2 Find Multiple of 8 using Repeated addition method
6.3 Find the first 6 Multiple of 8
6.4 Find the sum of first 12 Multiple of 12
6.5 Find the average of first 12 Multiple of 12
6.6 Find Multiple of 7 that are less than or equal to 56
6.7 Find Multiple of 12 that are between 20 and 70
6.8 Find the smallest Multiple of 13 greater than 1000
6.9 Find the largest Multiple of 7 less than 1000
6.10 How many Multiple of 7 between 100 and 1000
6.11 Is 104 a multiple of 8
7. Factors and Prime factors of a number on 11.06.2024
7.1 Prime factorization by Division method
7.2 Prime factorization using Factor tree method
7.3 Prime factorization using the Ladder method
7.4 Factors by Division method
7.5 Factors by Multiplication method
7.6 Factor Pairs
8. HCF and LCM of numbers on 24.05.2024
8.1 HCF by Listing Method
8.2 HCF by Prime Factorization Method
8.3 HCF by Division Method
8.4 HCF by Repeated Division Method
8.5 LCM by Listing Method
8.6 LCM by Prime Factorization Method
8.7 LCM by Division Method
8.8 LCD
8.9 Common Factor by Listing Method
9.1 Log | Logarithm on 28.04.2024
9.2 ln - Natural log
9.3 Antilog | Antilogarithm
9.4 Anti Natural log
10. The Equation for the terminal Side `theta` is `2x+y=0, x>=0`. Find the value of all six trigonometric functions on 25.04.2024
11. Net Present Value (NPV) on 19.03.2024
12. Amortization on 14.03.2024
13.1 Future value using Simple Interest on 05.03.2024
13.2 Future value using Compound Interest
13.3 Future value of Annuity
13.4 Future value of Annuity Due
13.5 Present value using Simple Interest
13.6 Present value using Compound Interest
13.7 Present value of Annuity
13.8 Present value of Annuity Due
13.9 Contineous Compounding
14.1 Future value factor
14.2 Present value factor
14.3 Discount factor
14.4 Future value factor table
14.5 Present value factor table
14.6 Discount factor table
15.1 Effective interest rate
15.2 Nominal interest rate
16.1 Simple bar graph on 26.02.2024
16.2 Multiple bar graph
16.3 Percentage bar graph
16.4 Simple stacked bar chart
16.5 Percentage stacked bar chart
16.6 Pie Chart
16.7 Donut Chart
16.8 Scatter Plot | XY Graph
16.9 Line Graph
17.1 Ogive (cumulative frequency curve) on 25.01.2024
17.2 Frequency polygon with the help of Histogram
17.3 Frequency curve with the help of Histogram
18. Queueing Theory on 06.01.2024
18.1 M/M/1 Queuing Model
18.1 M/M/1/N Queuing Model (M/M/1/K)
18.1 M/M/1/N/N Queuing Model (M/M/1/K/K)
18.2 M/M/s Queuing Model (M/M/c)
18.2 M/M/s/N Queuing Model (M/M/c/K)
18.2 M/M/s/N/N Queuing Model (M/M/c/K/K)
18.2 M/M/Infinity Queuing Model
19. Binomial expansion `(2x+3y)^5` on 26.09.2023
20. Words to Numbers Converter on 24.09.2023
21. Oddment method on 29.07.2023
22.1 Octile, Quintile for ungrouped data on 27.07.2023
22.2 Octile, Quintile for grouped data
23. Index Number on 16.07.2023
1.1 Fixed base method
1.2 Chain base method
2. Unweighted Index Number
2.1 Simple Aggregative Method
2.2 Simple Average of Price Relative Method (using the arithmetic mean)
2.3 Simple Average of Price Relative Method (using the geometric mean)
3.1 Fixed base method for bivariate grouped data
3.2 Chain base method for bivariate grouped data
4.1 Conversion of fixed base index numbers into chain base index numbers
4.2 Conversion of chain base index numbers into fixed base index numbers
5. Weighted Index Numbers
5.1 Laspeyre's price index number
5.2 Paasche's price index number
5.3 Fisher's price index number
5.4 Marshall Edgeworth's price index number
5.5 Dorbish-Bowley's price index number
5.6 Kelly's price index number
5.7 Walsh's price index number
6.1 Weighted aggregate method
6.2 Weighted average of price relatives method
7. Cost of living Index number
7.1 Aggregate expenditure method
7.2 Family budget method
24. Mode using Grouping Method on 12.12.2022
25. Construct an ungrouped frequency distribution table on 28.11.2022
26. Construct a grouped frequency distribution table
27. Maximum, Minimum for ungrouped data
28. Sum, Length for ungrouped data
29. Range, Mid Range for ungrouped data
30. Stem and leaf plot for ungrouped data
31. Ascending order, Descending order for ungrouped data
32. Run Length Encoding on 21.11.2022
33. Run Length Decoding
34. Modulo on 15.11.2022
35. Fast modular exponentiation
36. Coding Decoding on 19.10.2022
37. Ridder's Method on 23.05.2022
38. Vector triple product on 13.04.2022
39. Law of Sines Calculator on 13.04.2022
40. Law of Cosines Calculator
41.1 Sine Calculator on 11.04.2022
41.2 Cosine Calculator
41.3 Tangent Calculator
41.4 Cosecant Calculator
41.5 Secant Calculator
41.6 Cotangent Calculator
42.1 Inverse Sine Calculator
42.2 Inverse Cosine Calculator
42.3 Inverse Tangent Calculator
42.4 Inverse Cosecant Calculator
42.5 Inverse Secant Calculator
42.6 Inverse Cotangent Calculator
43.1 Hyperbolic Sine Calculator
43.2 Hyperbolic Cosine Calculator
43.3 Hyperbolic Tangent Calculator
43.4 Hyperbolic Cosecant Calculator
43.5 Hyperbolic Secant Calculator
43.6 Hyperbolic Cotangent Calculator
44.1 Inverse Hyperbolic Sine Calculator
44.2 Inverse Hyperbolic Cosine Calculator
44.3 Inverse Hyperbolic Tangent Calculator
44.4 Inverse Hyperbolic Cosecant Calculator
44.5 Inverse Hyperbolic Secant Calculator
44.6 Inverse Hyperbolic Cotangent Calculator
45. If `x+y+z=1,xy+yz+zx=-1` and `xyz=-1` then find `x^3+y^3+z^3` on 25.02.2022
46. If `alpha` and `beta` are roots of equation `2x^2-3x-6=0`, then find `alpha^2+beta^2` on 29.01.2022
47. If `alpha` and `beta` are roots of equation `2x^2-3x-6=0`, then find equation whose roots are `alpha^2` and `beta^2`
48. Find value of `k` for which `2x^2+kx+2=0` has real roots
49. Wrong Number series on 06.01.2022
50. Missing Number Series
51. Alphabate series on 13.12.2021
52. Missing Letter Series
53. Richardson extrapolation formula for differentiation on 11.12.2021
54. Find other polynomial when one polynomial its GCD and LCM are given
55. Lattice Multiplication on 08.12.2021
56. Alphametic Puzzles, Algebrograms, Cryptarithms, Cryptograms solver on 02.12.2021
57. Restoring Division Algorithm For Unsigned Integer on 29.11.2021
58. Non-Restoring Division Algorithm For Unsigned Integer on 01.12.2021
59 Solve (2nd order) numerical differential equation using (on 17.10.2021)
1. Euler method
2. Runge-Kutta 2 method
3. Runge-Kutta 3 method
4. Runge-Kutta 4 method
60.1 Find the value of h,k for which the system of equations has a Unique solution on 16.10.2021
60.2 Find the value of h,k for which the system of equations has Infinite solution
60.3 Find the value of h,k for which the system of equations has No solution
60.4 Find the value of h,k for which the system of equations is consistent
60.5 Find the value of h,k for which the system of equations is inconsistent
60.6 Determine whether the system of linear equations has a Unique solution
60.7 Determine whether the system of linear equations has Infinite solution
60.8 Determine whether the system of linear equations has No solution
60.9 Determine whether the system of linear equations is consistent
60.10 Determine whether the system of linear equations is inconsistent
61. Chinese Remainder Theorem on 08.08.2021
62. Extended Euclidean Algorithm
63. Euclid's Algorithm
64. Modular multiplicative inverse
65. Remainder theorem on 04.08.2021
66. Singular Value Decomposition (SVD) Code improved on 29.07.2021
67. Numerical Differentiation first order and second order using on 14.07.2021
1. 2 point Forward, Backward, Central difference formula
2. 3 point Forward, Backward, Central difference formula
3. 4 point Forward, Backward, Central difference formula
4. 5 point Forward, Central difference formula
68. Time Series and Forecasting on 07.07.2021
1. Simple Moving Average
2. Weighted Moving Average
3. Single Exponential Smoothing
4. Simple Moving Average forecast
5. Weighted Moving Average forecast
6. Single Exponential Smoothing forecast
69. Cubic spline interpolation on 28.06.2021
70. Missing terms in interpolation table on 27.05.2021
71. Lagrange's Inverse Interpolation formula on 24.05.2021
72. on 11.05.2021
1. LU decomposition using Doolittle's method of Matrix
2. LU decomposition using Crout's method of Matrix
3. Solve systems of linear equations using Doolittle's method
4. Solve systems of linear equations using Crout's method
73. Statistical Methods on 09.04.2021
1. Five number summary for ungrouped data
2. Box and Whisker Plots for ungrouped data
3. Five number summary for grouped data
4. Box and Whisker Plots for grouped data
74. Verifying if two functions are inverses of each other on 03.04.2021
75. Polynomial on 13.03.2021
1. Polynomial in ascending order
2. Polynomial in descending order
3. Degree of a polynomial
4. Leading term of a polynomial
5. Leading coefficient of a polynomial
6. Determine expression is a polynomial or not
7. Zeros of a polynomial
76. is Negative Definite Matrix on 28.02.2021
77. Row Space on 13.02.2021
78. Column Space
79. Null Space
80. Percentage on 06.02.2021
81. Arithmetic Progression
82. Geometric Progression
83. Simple Interest
84. Compound Interest
85. Relaxation method on 22.01.2021
86. Karnaugh Map method (Kmap) on 21.01.2021
87. Quine-McCluskey method
88. Halley's Method on 11.01.2021
89. Steffensen's Method
90. is Derogatory Matrix on 03.11.2020
91. Functions on 30.07.2020
1. Domain of a function
2. Range of a function
3. Inverse of a function
4. Properties of a function
5. Vertex of a function
6. Focus of a function
7. axis symmetry of a parabola
8. Directrix of a function
9. Intercept of a function
10. Parity of a function
11. Asymptotes of a function
92. on 26.07.2020
1. solve equation `3/y+14/x=5,21/x-1/y=2` by taking `1/x=X` and `1/y=Y`
2. solve equation `3x+14y=5xy,21y-x=2xy` by dividing `xy`
93. on 09.07.2020
1. Taylor Series method
2. cuberoot(48) using iteration method
94. Numerical Interpolation using on 06.07.2020
11. Hermite's formula
95. Numerical Interpolation using on 24.06.2020
6. Gauss Forward formula
7. Gauss Backward formula
8. Stirling's formula
9. Bessel's formula
10. Everett's formula
96. Numerical Differentiation using on 24.06.2020
4. Newton's Divided Difference formula
5. Lagrange's formula
6. Stirling's formula
7. Bessel's formula
97. Numerical Integration using on 24.06.2020
4. Boole's Rule
5. Weddle's Rule
98. Sequencing Problems - Processing 2 Jobs Through m Machines Problem on 17.04.20
99. SOR (Successive over-relaxation) method on 11.04.20
100. For P(3,4), find the value of all six trigonometric functions on 29.03.20
101. Bairstow method on 03.03.20
102. 3 Missing frequencies when Mean or Median or mode are given on 31.01.2020
103. fog(x)=(x+2)/(3x), f(x)=x-2. Find g(x)
104. gof(x)=1/x^2, f(x)=2+x^2. Find g(x).
105. Data envelopment analysis (DEA method) on 05.01.2020
106. Determinants using Sarrus Rule on 23.10.19
107. Determinants using properties of determinants
108. Hyperbolic functions implemented on 26.09.19
109. Five number summary
110. diagonally dominant equation
111. set builder notation (Code improved) on 19.09.19
112. stem and leaf plot
113. Partial Fraction bug solved on 13.09.19
114. PERT and CPM Network diagram (improved) on 26.08.19
114. BCD and Excess 3 Addition and Subtraction using 9's or 10's complement Method on 22.08.19
1. BCD Addition
2. BCD Subtraction using 9's complement
3. BCD Subtraction using 10's complement
4. Excess 3 Addition
5. Excess 3 Subtraction using 9's complement
6. Excess 3 Subtraction using 10's complement
116. Conversion on 22.08.19
1. Decimal To BCD
2. Binary To BCD
3. Octal To BCD
4. Hexadecimal To BCD
5. BCD To Decimal
6. BCD To Binary
7. BCD To Octal
8. BCD To Hexadecimal
9. BCD To Excess 3
10. Decimal To Excess 3
11. Binary To Excess 3
12. Octal To Excess 3
13. Hexadecimal To Excess 3
14. Excess 3 To Decimal
15. Excess 3 To Binary
16. Excess 3 To Octal
17. Excess 3 To Hexadecimal
18. Excess 3 To BCD
19. Decimal To Gray code
20. Binary To Gray code
21. Octal To Gray code
22. Hexadecimal To Gray code
23. Gray code To Decimal
24. Gray code To Binary
25. Gray code To Octal
26. Gray code To Hexadecimal
117. Logarithmic equations 07.08.19
Unitary Method (Chain Rule) 18.07.19
118. If 17 books cost Rs 306, what do 29 books cost?
119. If 5 artical cost Rs 90, the cost of 9 artical is?
120. If 20 persons can do a piece of work in 7 days, then the number of persons required to complete the work in 28 days is?
121. If 5 men working 6 hours a day can reap a field in 20 days, in how many days will 15 men reap the field, working 8 hours a day?
Probability 17.07.19
122. 3 unbiased coins are tossed, What is the probability of getting exactly 2 tails
123. In a throw of two dice, What is the probability getting a total of 10 or 11
124. two card is drawn at random from a pack of 52 cards. What is the probability that the drawn cards are both aces
125. A bag contains 5 blue and 4 black balls. Three balls are drawn at random, what is the probability that 2 are blue and 1 is black?
Age word problems 16.07.19
126. 10 years ago, A was 4 times as old as B. 10 years hence, A will be 2 times as old as B. At present, A's age and B's age is ?
127. The ratio of Meena's age and Kamla's age is 3 : 5 and the sum of Meena's age and Kamla's ages is 80 years. The ratio of their ages after 10 years will be ?
Quadratic equations (Solution by considering m) on 10.07.19
128. `(x^2+1/x^2)-8(x+1/x)+14=0`
129. `4((4x+1)/(4x-1))^(2)+(4x+1)/(4x-1)=3`
130. `12((x)/(x-1))+12((x-1)/(x))=25`
131. Vector Algebra on 08.07.19
1. Addition/Subtraction of two vectors
2. Scalar Multiplication of vectors
3. Dot Product of two vectors
4. Cross Product of two vectors
5. Magnitude(length) of a vector
6. Unit vector
7. Direction cosines of a vector
8. Component form of a vector given two points
9. Angle between two vectors
10. Vector projections of B onto A
11. Orthogonal vectors
12. Collinear vectors
13. Coplanar vectors
14. Scalar triple product
15. Area of triangle determined by two vectors
16. Area of parallelogram determined by two vectors
17. Volume of pyramid determined by vectors
18. Volume of Parallelepiped determined by vectors
19. Decomposition of vector in basis
20. Linearly dependent and linearly independent vectors
132. Normal Distribution Table
133. t Distribution Table
134. Chi square Distribution Table
135. F Distribution Table
136. Binomial Distribution Table
137. F test
138. t-test
139. Standard error
140. Sign test
141. Mann whitney U test
142. Kruskal-wallis test
143. Chi square test
144. Median test
145. Mood's Median test
146. Cholesky decomposition method of a System of linear equations on 06.06.19
147. Covariance - Population Covariance, Sample Covariance for bivariate grouped data on 03.06.19
148. Covariance - Population Covariance, Sample Covariance for bivariate grouped data on 03.06.19
149. LU decomposition method / Crout's method of a System of linear equations on 30.05.19
150. Mean, Quartile, Decile, Percentile deviation for ungrouped data on 19.05.19
151. Mean, Quartile, Decile, Percentile deviation for grouped data on 19.05.19
152. One-way ANOVA on 09.05.19
153. Two-way ANOVA on 09.05.19
154. Power Method for dominant eigenvalue on 28.04.19
155. Partial Fraction on 19.04.19
156. Find roots of non-linear equations using Modified Newton Raphson method (Multivariate Newton Raphson method) on 19.04.19
157. Solve linear equations using Elimination method on 19.04.19
158. Maximize Profit case in transportation problem on 07.04.19
159. Revised Simplex method on 26.03.19
160. Moore-Penrose Pseudoinverse on 22.03.19
161. Geometric mean, Harmonic mean for ungrouped data on 21.03.19
162. Geometric mean, Harmonic mean for grouped data on 21.03.19
163. LQ Decomposition on 20.03.19
164. Muller method on 20.03.19
165. Matrix Algebra on 17.03.19
1. Matrix Algebra with variables
`[[2x,3y],[3x,4z]]`
2. Matrix Algebra with complex numbers
`[[-5i,3i],[4i,5i]]`
3. Matrix Algebra with surds
`[[1/sqrt(2),sqrt(2)],[4,-5]]`
166. PERT and CPM on 10.03.19
1. Network diagram
1. Activity, Predecessors
2. Activity i-j
3. Activity i-j, Name of Activity
2. Critical path, Total float, Free float, Independent float
1. Activity, Predecessors, Duration
2. Activity i-j, Duration
3. Activity i-j, Name of Activity, Duration
3. Project scheduling with uncertain activity times (Optimistic, Most likely, Pessimistic)
1. Activity, Predecessors, to, tm, tp
2. Activity i-j, to, tm, tp
3. Activity i-j, Name of Activity, to, tm, tp
4. Project crashing to solve Time-Cost Trade-Off with fixed Indirect cost
1. Activity, Predecessors, Normal Time & Cost, Crash Time & Cost and Indirect Cost
2. Activity i-j, Normal Time & Cost, Crash Time & Cost and Indirect Cost
3. Activity i-j, Name of Activity, Normal Time & Cost, Crash Time & Cost and Indirect Cost
5. Project crashing to solve Time-Cost Trade-Off with varying Indirect cost
1. Activity, Predecessors, Normal Time & Cost, Crash Time & Cost and varying Indirect Cost
2. Activity i-j, Normal Time & Cost, Crash Time & Cost and varying Indirect Cost
3. Activity i-j, Name of Activity, Normal Time & Cost, Crash Time & Cost and varying Indirect Cost
167. Transportation Problem
1. Heuristic method-1 on 07.01.19
2. Heuristic method-2 on 07.01.19
3. Row minima method on 24.12.18
4. Column minima method on 24.12.18
5. Russell's approximation method on 24.12.18
168. class and their frequency table on 31.12.18
169. less than or more than type cumulative frequency table on 31.12.18
170. Ratio and Proportion on 02.12.18
171. Synthetic division on 12.11.18
172. Singular Value Decomposition (SVD) on 04.11.18
173. All problem solution using search box on 05.10.18
174. Share solution on facebook, twitter with your friends on 17.08.18
175. Matrix Structure on 24.07.18
176. Algorithm, Formulas, Examples added at respective pages on 20.07.18
177. Simplex method Algorithm and examples on 08.07.18
178. Statistical Methods on 30.03.18
1. Permutation & combination
1. Find `n!`
2. Find `(n!)/(m!)`
3. Find `{::}^nP_r`
4. Find `{::}^nC_r`
5. How many words can be formed from the letters of the word daughter?
6. How many ways a committee of players can be formed ?
7. Permutation, Combination List
2. Probability
1. Coin
2. Dice
3. Cards
4. Balls
179. Calculus
1. Trigonometry on 20.03.18
1. Simplifying trigonometric equations, proving identities,
eg. (1) `sin(30)*cos(60)+sin(30)*cos(60)`, (2) `tan(x)+cot(x)`, (3) `tan^2(x)-sin^2(x)`, (4) `csc(x)/cos(x)-cos(x)/sin(x)`
2.1 If `sin(x)=5/13` then Find the value of other five trigonometric functions
2.2 If `sin(x)=3/5` then solve expression `cos(x)csc(x)+tan(x)sec(x)`
2. Derivative on 20.03.18
1. Find Derivative,
eg. (1) `d/(dx)(2x^(3)-2x^(2)-5x+4)`, (2) `d/(dx)(log(x)e^(x))`, (3) `d/(dx)(3cos(sin(x)))`
2. Find maximum and minimum value of `y=x^3+6x^2-15x+7`
180. About us
181. Algebra
1. Functions
2. Set Theory (using builder form)
3. Interval notation and set builder notation
182. Word Problems
1. Age word problems
2. Unitary Method (Chain Rule)
183. Simplex method
1. Branch and Bound method
2. 0-1 Integer programming problem
184. Game Theory
1. Bimatrix method
185. Matrix operations
1. Cholesky Decomposition
2. QR Decomposition (Gram Schmidt Method)
3. QR Decomposition (Householder Method)
186. Solve numerical differential equation using
1. Adams bashforth predictor method
2. Milne's simpson predictor corrector method
187. Coordinate Geometry
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