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Write a 3-digit bnumber abc as 100a+10b+...

Write a 3-digit bnumber abc as 100a+10b+c =99a+11b+(a-b+c)=11(9a+b)+(a-b+c)
If the number abc is divisible by 11,then what can yu say about (a-b+c)?
Is it necessary tht (a+c-b) should be divisible by 11 ?

Text Solution

Verified by Experts

The correct Answer is:
not necessary that (a-b+c) should be divisible by 11.
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