Find the average of the prime numbers lying between 68 and 96.
- A79
- B81
- C80
- D78
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
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