Data interpretationQuestion 508 of 550

The mean of six numbers is 8. Five of them are 5, 9, 7, 10 and 8. What is the sixth number?

  1. 8
  2. 10
  3. 7
  4. 9
Show answer

Correct answer: 9

The sum is 6 × 8 = 48. The sum of the five is 39. The sixth number is 48 - 39 = 9.

Test structure: ETEC guide to the GAT

Practice data interpretation

Questions last reviewed: 21 October 2026