Questions Hot!: Gre Math Prep

The average (arithmetic mean) of 5 numbers is 18. If one number is removed, the new average is 15. What is the value of the removed number?

If you were to represent the Facebook data as a slice of a pie chart, what is the central angle (in degrees) of that slice? gre math prep questions

Facebook = 35% of 360°. (0.35 \times 360 = 126) degrees. Answer: 126 The average (arithmetic mean) of 5 numbers is 18

The content spans arithmetic, algebra, geometry (limited to circles, triangles, rectangles, and coordinate planes), and data analysis (interpretation of charts and probability). geometry (limited to circles