The average of 13 numbers is 42. If a 14th number is included, then the average becomes 44. What is the 14th number?
Answer & explanation
Correct answer: option 1
Total Sum of 13 numbers = 13 × 42 = 546
Total Sum of 14 numbers = 14 × 44 = 616
14th number is = 616 - 546 = 70