Exams › SSC CGL (Prelims) › General
The average of 11 numbers is 48. When one number is removed, the average becomes 45. What number was removed?
- 72
- 78
- 81
- 84
Correct answer: 78
Solution
Sum of 11 numbers = 11×48 = 528. After removing one number, sum of remaining 10 numbers = 10×45 = 450. The removed number is 528 - 450 = 78.
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