### The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is ?

A. 25 B. 27 C. 30 D. 35 Answer: Option D

### Solution(By Apex Team)

$\begin{array}{l}\text{Sum of five number}\\ \text{= 27 × 5 = 135}\\ \text{Sum of four number}\\ \text{= 25 × 4 = 100}\\ \text{Excluded number}\\ \text{= 135 – 100 = 35}\end{array}$

A. 20
B. 21
C. 28
D. 32

A. 18
B. 20
C. 24
D. 30

A. 10 years
B. 10.5 years
C. 11 years
D. 12 years