Question

The average of 11 results is 60. If the average of first six results is 58 and that of last six is 63, find the 6^th results.

विकल्प

• 66

• 55

• 64

• 68

Answer 1

66

Explanation:

The average of 11 results = 60

The total of 11 results = 60 × 11 = 660

Average of first six results = 58

Average oflast six results = 63

Total of first six results= 58 × 6 = 348

Total of last six results = 63 × 6 = 378

Sixth results = Total of first and last six results = Total of 11 results

= (348 + 378) – 660

= 726 – 660

= 66