Question

mean of 5 number is 18.if is excluded the mean of remaining become 16 . find the no excluded

Answer 1

Mean of 5 number is 18.
Sum of 5 numbers = 18×5 = 90

if one is excluded, the mean of remaining 4 numbers become 16
Sum of remaining 4 numbers = 16×4 = 64

excluded number = 90 - 64 = 26

Answer 2

Given:

→ The mean of 5 numbers is 18 if one number is excluded their men is 16.

Find:

→ Find the excluded number.

Calculations:

→ Mean of five numbers = 18.

→ 5 × 18

→ 90 -----(1)

We know, one number is excluded.

→ 4 × 16

→ 64 -----(2)

Subtracting equation (1) with equation (2), we get:

→ 90 - 64

→ 26

Therefore, 26 is the excluded number.