Math, asked by manishak7892, 1 year ago

the mean of 5 numbers is 20 if one of the number is excluded mean of the remaining number becomes 23 find the excluded number​

Answers

Answered by welltododevon
4

Answer:

Excluded number is 8

Step-by-step explanation:

Mean of 5 numbers is 20

Total sum of the all the numbers = 5 x 20 = 100

if one of the number is excluded mean of the remaining number becomes 23

i,e Mean of 4 numbers is 23

Total sum of 4 numbers = 4 x 23 = 92

Excluded number = Initial sum of 5 numbers - Final sum of 4 numbers

= 100-92

= 8

Excluded number is 8

Answered by KhataranakhKhiladi2
7

ANSWER...................,

The mean of 5 number = 20

The sum of 5 number = 5 × 20 = 100

If one number is excluded ,

Then mean of 4 number = 23

Sum of 4 number = 4 × 23 = 92

∴excluded number = 100 - 92 = 8

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