Math Practice Questions

[whereisraihan]

Hi,
I have MGMAt math books(all). I can solve the given tough problems in the books. But I can't solve few questions which I have got from other sources specially in case of data sufficiency. These questions are really tough. my question is if i practice only the questions suggested by MGMAT, will they be enough?
Raihan

[RonPurewal]

Hi,
This is the wrong folder for this question. Questions about general study strategies belong in the General GMAT Strategy Questions folder.

Also, we can't really give recommendations regarding other companies' products.
If you can solve the OG and GMAT Prep problems, then you are fine.