[image] For the above question what is the strategy that helps to solve it at speed? Is it choosing numbers, easier examples or algebra? Please let me know what your approach would be to solve this in seconds.

[image] How to Ask Better GRE Questions on Forums GRE General Welcome to the forums! Since GregMat (who is a very chill person) doesn’t have any specific formatting rules when it comes to asking questions on the forums, I feel like there should at least be a re…

I would consider the remainders when we divide each side of the equations by 2.

You can choose numbers for this Question. Starting with x=1 A) y=5 (odd) B) y=7 (odd) C) y=3 (even) D) y=2.5 (not an integer) E) y=4 (even) Now to decide between C and E, we can choose another number Let’s say x=3 C) y=2 (even) E) y=0

3 isn’t even - just choosing x = 1 will give you the answer that only E satisfies the chosen number.

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