May vs must vs could how to tackle these types?

GRE Quant Problem Solving
1

Could somebody help me out if in a GRE the questions are framed regarding to :

1)may/might be true?
2)must be true?
3)could be true?

How to tackle these type of questions?

2

Read this: https://gmatclub.com/forum/must-be-true-maybe-true-could-be-true-always-true-265621.html#:~:text="Must%20be%20True"%20and%20",is%20true%20to%20reject%20it.

3

May be true: look for 1 positive case then you are good
Must be true: look for 1 negative case, then it is eliminated
could be true is the same as may be true.

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4

Thank you

5

Thank you !!This was helpful
do we have any other varitations too?

6

No that I have seen. In all the problems I’ve done, they are all ‘could be’ vs ‘must’. You can google ‘must vs could have’ questions and experiment with this method. You will see this is the best way to tackle them.

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