## Additional Practice

__Problem Solving__** (level of difficulty: 350 to 500) **

Temporary employees

__Problem Solving__** (level of difficulty: 500 to 650)**

8 teams in a league

Mobsters

Posting letters

Medical experiment

Cycling race

Palindrome

Carson family

Basketball team

Stock exchange codes

Team with exactly 2 women

University math department

__Problem Solving__** (level of difficulty: 650 to 800)**

Shake hands with 3 people

5-letter words

Triangles and quadrilaterals

Number of rectangles in plane (geometry, counting)

16 different gifts

Bill’s 12-card deck

Triangles in the plane

Note: Data sufficiency questions related to counting are very rare.

## Practice from the Official Guides

**Official Guide for GMAT Review (2015 edition or 13th edition)**

Problem Solving: 124, 128, 133, 148, 228

**Official Guide for GMAT Quantitative Review (2nd edition)**

Problem Solving: 132, 151

Track your progress by entering answers directly into our free, downloadable GMAT Prep Now Improvement Chart for the Official Guide (**2015 edition or 13th edition**)