Correct Answer - Option 2 : 15
Given:
S = {2, 5, 7, 15, 21, 23, 32}
Formula Used:
Arithmetic mean = (Sum of terms)/(Number of terms)
Calculations:
S = {2, 5, 7, 15, 21, 23, 32}
Number of terms = 7
Arithmetic mean = (Sum of terms)/(Number of terms)
Sum of terms = {2 + 5 + 7 + 15 + 21 + 23 + 32} = 105
⇒ Arithmetic mean of S = 105/7 = 15
∴ The arithmetic mean of S is 15.
