engineering intelligence MCQ #196

If the average of 5 numbers is 20, and 4 of the numbers are 15, 25, 20, and 18, what is the fifth number?

engineering intelligence MCQ #196

  1. Question 1

    Q1. If the average of 5 numbers is 20, and 4 of the numbers are 15, 25, 20, and 18, what is the fifth number?

    • A) 22
    • B) 25
    • C) 30
    • D) 32

    Answer: 22

    Explanation: The sum of the 5 numbers = 5 * 20 = 100. The sum of the 4 given numbers = 15 + 25 + 20 + 18 = 78. So, the fifth number = 100 - 78 = 22.