issb mathematics MCQ #289

Average of 10, 20, x is 18. x is:

issb mathematics MCQ #289

  1. Question 1

    Q1. Average of 10, 20, x is 18. x is:

    • A) 20
    • B) 24
    • C) 26
    • D) 28

    Answer: 24

    Explanation: Sum of three numbers is 54. 10 plus 20 plus x equals 54, so x is 24.