1. If a number is divided by 30 then it leaves 17 as a remainder. What will be the remainder when the same number is divided by 10?
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By: anil on 05 May 2019 02.23 am
The number when divided by 30 leaves remainder 17, => Number is of the form = $$N=30k+17$$, where $$k$$ is a whole number. Now, when $$N$$ is divided by 10, we get : $$frac{30k+17}{10}$$ = $$(frac{30k}{10})+(frac{17}{10})$$ $$ecause30k$$ is completely divisible by 10, hence the second term will determine the remainder. => Remainder when 17 is divided by 10 is $$17\%10=7$$ => Ans - (A)
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