# GMAT Quant Help

- Combinations vs. Permutation Problem (GMAT and GRE)
- 100 Boxes, Four Cubes: Full Explanation
- Set vs. List vs. "Set" of Data - What Are the Differences? (GRE and GMAT)
- When can I/can't I cancel factors with variables such as (x - 1) /(x - 1)?
- Can factors or multiples be negative? (GRE and GMAT)
- The Quizzes are Too Hard! They Include Topics I Haven't Studied Yet! What Should I do? (GMAT)
- What exactly are the properties of zero? (GMAT and GRE)
- What can I assume is true on GMAT diagrams?
- When do I need to check for extraneous roots?
- What's the best strategy for GMAT Quant age questions?
- How do I deal with word problems? (GMAT)
- GMAT Quant: Data Sufficiency Help - intro, tips, strategies, pacing