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1 mark

Find the average of the prime numbers lying between 68 and 96.

  1. A
    79
  2. B
    81
  3. C
    80
  4. D
    78

Solution & Step-by-step Explanation

First, identify all the prime numbers lying between 68 and 96:
The prime numbers are: 71,73,79,83,89,93 (No, 93=3×31 is not prime). Let's list carefully:

71

73

79

83

89

Total number of prime numbers (n) = 5

Now, find the sum of these prime numbers:

Sum=71+73+79+83+89=395
Calculate the average:

Average=
n
Sum

=
5
395

=79

Practice this question

Try it yourself before checking the explanation above.

Find the average of the prime numbers lying between 68 and 96.
A
79
B
81
C
80
D
78

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