Monday, August 4, 2014

JMO divisibility

What is the remainder when 17200 is divided by 18 ?

JMO STD VII and STD VIII
Answer:


(17200 - 1200) is completely divisible by (17 + 1) as 200 is even.

So, (17200 - 1200) is completely divisible by 18.

So, (17200 - 1200) / 18 = Q  (where Q= quotient)
So, 17200 = 18 Q + 1
So, Remainder = 1

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