The mean of 4 numbers is 8. If one number, 12, is added, what is the new mean?

Type: MCQ • Marks: 1

A. 8

B. 8.8

C. 9

D. 10

Explanation

Sum of 4 numbers = 4 * 8 = 32. New sum = 32 + 12 = 44. New mean = 44 / 5 = 8.8.

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Class 7th Ganita Prakash 2

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