GATE ME 2017 Set 2 — Question 58
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General Aptitude → Analytical Aptitude → Numerical Relations & Reasoning
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Question
If and are integers and is even, which of the following must always be even?
Correct answer
(D) ab - b
Solution
Given that is even, and must have the same parity (both even or both odd).Case 1: Both and are even.
- is even.
- is .
- is .
- is .
- is .
- is .
- is .
- is .
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