1. Check whether 13489 is divisible by 47 or not?Solution:Divisibility rule of 47 :
14 times the last digit and subtract it from the rest of the number.
If the answer is divisible by 47, then number is also divisible by 47.
(Apply this rule to the answer again if necessary)
`1348color{red}{9}=>1348 - color{red}{9} xx 14 = 1348 -126 = 1222`
`122color{red}{2}=>122 - color{red}{2} xx 14 = 122 -28 = 94`
Here 94 is divisible by 47.
`:.` 13489 is divisible by 47.
2. Check whether 15275 is divisible by 47 or not?Solution:Divisibility rule of 47 :
14 times the last digit and subtract it from the rest of the number.
If the answer is divisible by 47, then number is also divisible by 47.
(Apply this rule to the answer again if necessary)
`1527color{red}{5}=>1527 - color{red}{5} xx 14 = 1527 -70 = 1457`
`145color{red}{7}=>145 - color{red}{7} xx 14 = 145 -98 = 47`
Here 47 is divisible by 47.
`:.` 15275 is divisible by 47.
3. Check whether 16544 is divisible by 47 or not?Solution:Divisibility rule of 47 :
14 times the last digit and subtract it from the rest of the number.
If the answer is divisible by 47, then number is also divisible by 47.
(Apply this rule to the answer again if necessary)
`1654color{red}{4}=>1654 - color{red}{4} xx 14 = 1654 -56 = 1598`
`159color{red}{8}=>159 - color{red}{8} xx 14 = 159 -112 = 47`
Here 47 is divisible by 47.
`:.` 16544 is divisible by 47.
4. Check whether 12262 is divisible by 47 or not?Solution:Divisibility rule of 47 :
14 times the last digit and subtract it from the rest of the number.
If the answer is divisible by 47, then number is also divisible by 47.
(Apply this rule to the answer again if necessary)
`1226color{red}{2}=>1226 - color{red}{2} xx 14 = 1226 -28 = 1198`
`119color{red}{8}=>119 - color{red}{8} xx 14 = 119 -112 = 7`
Here 7 is not divisible by 47.
`:.` 12262 is not divisible by 47.
5. Check whether 15574 is divisible by 47 or not?Solution:Divisibility rule of 47 :
14 times the last digit and subtract it from the rest of the number.
If the answer is divisible by 47, then number is also divisible by 47.
(Apply this rule to the answer again if necessary)
`1557color{red}{4}=>1557 - color{red}{4} xx 14 = 1557 -56 = 1501`
`150color{red}{1}=>150 - color{red}{1} xx 14 = 150 -14 = 136`
`13color{red}{6}=>13 - color{red}{6} xx 14 = 13 -84 = -71`
Here -71 is not divisible by 47.
`:.` 15574 is not divisible by 47.
6. Check whether 18051 is divisible by 47 or not?Solution:Divisibility rule of 47 :
14 times the last digit and subtract it from the rest of the number.
If the answer is divisible by 47, then number is also divisible by 47.
(Apply this rule to the answer again if necessary)
`1805color{red}{1}=>1805 - color{red}{1} xx 14 = 1805 -14 = 1791`
`179color{red}{1}=>179 - color{red}{1} xx 14 = 179 -14 = 165`
`16color{red}{5}=>16 - color{red}{5} xx 14 = 16 -70 = -54`
Here -54 is not divisible by 47.
`:.` 18051 is not divisible by 47.
This material is intended as a summary. Use your textbook for detail explanation.
Any bug, improvement, feedback then