Practice Test Discussion

Q)

The average of 5 numbers is 65. The average of the first two numbers is 81 and the average of the last two numbers is 38. What is the third number?

[Corporation Bank (PO), 2010]

    • Explanation

    given,

    Total sum of five numbers =5×65=325

    Sum of first two numbers =2×81=162

    Sum of last two numbers =2×38

          =76

    So, third number =325-(162+76)

      =325-(238)

      =87

    Hence, Option B is correct.

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