issb mathematics MCQ #372

Average of 10, 20, 30?

issb mathematics MCQ #372

  1. Question 1

    Q1. Average of 10, 20, 30?

    • A) 15
    • B) 20
    • C) 25
    • D) 30

    Answer: 20

    Explanation: Sum 60 divided by 3 equals average 20. Work each step carefully; ISSB math rewards accuracy under time pressure.