Average Practice Test 5

Question : 14 of 40

Marks: +1, -0

Find the average of all the prime numbers between 60 and 90.

Solution:

Prime numbers between 60 and 90 = 61, 67, 71, 73, 79, 83, 89
Average

= {\Sum \of \prime \numbers}/{\Number \of \primes}

={61+67+71+73+79+83+89}/7=523/7=74.71

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