Correct Answer - Option 4 : 48
Given:
The mean of 5 numbers is 28
One number is excluded so mean decreased by 5 i.e. 23
Formula Used:
Sum of numbers = Mean × No. of numbers
Calculation:
⇒ Sum of the 5 numbers = 5 × 28 = 140
Mean of 4 numbers is 23
⇒ Sum of the remaining four numbers = 4 × 23 = 92
∴ Excluded number = 140 – 92 = 48