Question

The mean of six numbers is 30. If one number is excluded, the mean of the remaining numbers is 29. The excluded number is

• A. 29
• B. 30
• C. 35
• D. 45

Answer 1

Answer: (C)

35

Answer 2

Sum of 6 numbers = 30 $\times$ 6 = 180 Sum of remaining 5 numbers = 29 $\times$ 5 = 145 $\therefore$ Excluded number = 180 - 145 = 35.