Aspire Faculty ID #16590 · Topic: NIMCET 2008 · Just now
NIMCET 2008

Let $x,y,z$ be distinct integers. $x$ and $y$ are odd positive integers and $z$ is an even positive integer. Which of the following cannot be true?

Solution

Odd − even = odd, so $(x-z)$ is odd. Square of an odd number is odd, not even. Hence option (A) cannot be true.

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