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Home > Pre-Algebra calculators > Divisibility rule example
Divisibility rule of 49 example ( Enter your problem )
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  49. Divisibility rule of 49 example
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48. Divisibility rule of 48 example
(Previous example)		50. Divisibility rule of 50 example
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49. Divisibility rule of 49 example


1. Check whether 14063 is divisible by 49 or not?

Solution:
Divisibility rule of 49 :
5 times the last digit and add it to the rest of the number.
If the answer is divisible by 49, then number is also divisible by 49.
(Apply this rule to the answer again if necessary)

`1406color{red}{3}=>1406 + color{red}{3} xx 5 = 1406 +15 = 1421`

`142color{red}{1}=>142 + color{red}{1} xx 5 = 142 +5 = 147`

`14color{red}{7}=>14 + color{red}{7} xx 5 = 14 +35 = 49`

Here 49 is divisible by 49.
`:.` 14063 is divisible by 49.


2. Check whether 16807 is divisible by 49 or not?

Solution:
Divisibility rule of 49 :
5 times the last digit and add it to the rest of the number.
If the answer is divisible by 49, then number is also divisible by 49.
(Apply this rule to the answer again if necessary)

`1680color{red}{7}=>1680 + color{red}{7} xx 5 = 1680 +35 = 1715`

`171color{red}{5}=>171 + color{red}{5} xx 5 = 171 +25 = 196`

`19color{red}{6}=>19 + color{red}{6} xx 5 = 19 +30 = 49`

Here 49 is divisible by 49.
`:.` 16807 is divisible by 49.


3. Check whether 18375 is divisible by 49 or not?

Solution:
Divisibility rule of 49 :
5 times the last digit and add it to the rest of the number.
If the answer is divisible by 49, then number is also divisible by 49.
(Apply this rule to the answer again if necessary)

`1837color{red}{5}=>1837 + color{red}{5} xx 5 = 1837 +25 = 1862`

`186color{red}{2}=>186 + color{red}{2} xx 5 = 186 +10 = 196`

`19color{red}{6}=>19 + color{red}{6} xx 5 = 19 +30 = 49`

Here 49 is divisible by 49.
`:.` 18375 is divisible by 49.


4. Check whether 12487 is divisible by 49 or not?

Solution:
Divisibility rule of 49 :
5 times the last digit and add it to the rest of the number.
If the answer is divisible by 49, then number is also divisible by 49.
(Apply this rule to the answer again if necessary)

`1248color{red}{7}=>1248 + color{red}{7} xx 5 = 1248 +35 = 1283`

`128color{red}{3}=>128 + color{red}{3} xx 5 = 128 +15 = 143`

`14color{red}{3}=>14 + color{red}{3} xx 5 = 14 +15 = 29`

Here 29 is not divisible by 49.
`:.` 12487 is not divisible by 49.


5. Check whether 15193 is divisible by 49 or not?

Solution:
Divisibility rule of 49 :
5 times the last digit and add it to the rest of the number.
If the answer is divisible by 49, then number is also divisible by 49.
(Apply this rule to the answer again if necessary)

`1519color{red}{3}=>1519 + color{red}{3} xx 5 = 1519 +15 = 1534`

`153color{red}{4}=>153 + color{red}{4} xx 5 = 153 +20 = 173`

`17color{red}{3}=>17 + color{red}{3} xx 5 = 17 +15 = 32`

Here 32 is not divisible by 49.
`:.` 15193 is not divisible by 49.


6. Check whether 18720 is divisible by 49 or not?

Solution:
Divisibility rule of 49 :
5 times the last digit and add it to the rest of the number.
If the answer is divisible by 49, then number is also divisible by 49.
(Apply this rule to the answer again if necessary)

`1872color{red}{0}=>1872 + color{red}{0} xx 5 = 1872 = 1872`

`187color{red}{2}=>187 + color{red}{2} xx 5 = 187 +10 = 197`

`19color{red}{7}=>19 + color{red}{7} xx 5 = 19 +35 = 54`

Here 54 is not divisible by 49.
`:.` 18720 is not divisible by 49.




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