Question

the mean of 5 numbers is 18 if one number is excluded there mean is 16 find the excluded number ​

Answer 1

Answer:

26

Step-by-step explanation:

Excluded no. = 18*5-16*4 =90-64=26

Answer 2

Answer:

• The excluded number is 26

Given :

• The mean of 5 numbers is 18.

• The one number is excluded their mean is 16.

To find :

• The excluded number =?

Step-by-step explanation:

Since the mean of 5 numbers = Sum of 5 numbers /5

But, the mean = 18 [Given]

∴ 18 = sum of 5 numbers /5

∴ Sum of 5 numbers = 90

Let the excluded number be x.

Then, sum of 4 numbers = 90 - x

The mean of 4 numbers = 90 - x / 4

∴ 16 = 90 - x /4

⟹ 64 = 90 - x

⟹ x = 90 - 64

⟹ x = 26

Hence,

The excluded number is 26.