Question

The average of five numbers is 66. If the average of first four numbers is 68, what is the value of the fifth number?

• A. 66
• B. 68
• C. 60
• D. 58

Answer 1

Answer:

D. 58

Sum of five numbers = 66 × 5 = 330 Average of first four numbers = 68 Sum of first four numbers = 68 × 4 = 272 Value of the fifth number = 330 – 272 = 58