-- advertisement --

Discussion

  1. The average of 13 result is 68. The average of first seven is 63 and that of the last seven is 70 , the seventh result is ?
    1. 47
    2. 65.5
    3. 73.5
    4. 94
  1. Correct Option: A

    Seventh Result = sum of first 7 results + sum of last 7 results - sum of all 13 results.
    ⇒ Seventh Result = (7 x 63) + (7 x 70) - (13 x 68 )
    =47


Your comments will be displayed only after manual approval.

-- advertisement --

-- advertisement --