Given that the mean of five numbers is 28. If one of them is excluded, the mean gets reduced by 5. Determine the excluded number.
Answer & explanation
Correct answer: option 3
The mean of five numbers = 28
After excluding one number the mean reduced by 5.
So the excluded number = 28 + 5 × remaining numbers
So the excluded number = 28 + 5 × 4
= 48