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SSC Selection Post 2022 PYQ — Question 61

SSC Selection Post - Matriculation Level - 3 Feb 2022 - Shift 2 • Quantitative Aptitude • Q61

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What is the average of all the prime numbers between 70 and 90?

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Correct answer: A

Explanation

The correct answer is option 1 i.e. 79.

Prime numbers between 70 and 90 = 71, 73, 79, 83 and 89

Sum = 71 + 73 + 79 + 83 + 89 = 395

Average = 395/5 = 79