The average of 11 results is 50. If the average of first six results is 49 and that of the last six is 52, then find the sixth result.
Answer & explanation
Correct answer: option 2
Average × Numbers = Total
50 × 11 = 550
First Six → 49 × 6 = 294
Last Six → 52 × 6 = 312
So there is one extra number and that is sixth = (312 + 294) - 550 = 56