Which one of the following is the average of all prime numbers between 21 and 55 ........

Quantitative Aptitude Number System

Which one of the following is the average of all prime numbers between 21 and 55 ?

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EPFO AO EO 2021

35.85

36.71

38.00

39.00

Let’s break it down. Here are the prime numbers between 21 and 55:

23, 29, 31, 37, 41, 43, 47, 53.

- Add them up:

23 + 29 + 31 + 37 + 41 + 43 + 47 + 53 = 304

- There are 8 primes in that range.

- So, the average is:

304 ÷ 8 = 38

Now, let’s check the options:

- Option 1: 35.85 — Too low.

- Option 2: 36.71 — Still a bit low.

- Option 3: 38.00 — Just right.

- Option 4: 39.00 — Not quite.

So, the correct answer is Option 3—38.00.

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