New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Average of five consecutive odd numbers is 17. What is the

    largest of the given five numbers?
    A 40 Correct Answer Incorrect Answer
    B 21 Correct Answer Incorrect Answer
    C 28 Correct Answer Incorrect Answer
    D 30 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the first number be 'x'

    Therefore, the five consecutive odd numbers will be 'x', (x + 2), (x + 4), (x + 6), (x + 8)

    ATQ:

    x + (x + 2) + (x + 4) + (x + 6) + (x + 8) = 5 × 17

    Or, 5x + 20 = 85

    Or, 5x = 85 - 20

    Or, 5x = 65

    Or, x = 65 ÷ 5 = 13

    Therefore, the first number = 13

    So, the largest or the last number is = (x + 8) = 13 + 8 = 21

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