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Question : What is the average of all numbers between 8 and 74 which are divisible by 7?

Option 1: 40

Option 2: 41

Option 3: 42

Option 4: 43


Team Careers360 21st Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: 42


Solution : The first number to be divisible by 7 in this range = 14
The last number to be divisible by 7 in this range = 70
This forms an arithmetic progression, So the average = $\frac{70+14}{2}$ = 42 [Using arithmetic mean = $\frac{\text{First term + Last Term}}{2}$]
Hence, the correct answer is 42.

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