Question

the mean of 5 number is 27 if one number is excluded then the mean is 25 find the excluded number​

Answer 1

Hey friends here is your answer :-

Given that mean of 5 numbers is 27

Let the five numbers are a,b,c,d,e.

Mean= sum of values/number of values

=> a+b+c+d+e/5= 27

=> a+b+c+d+e= 27×5

=> a+b+c+d+e= 135............1

If the number is excluded the mean is 25

=> a+b+c+d/4= 25

=> a+b+c+d= 25×4

=> a+b+c+d= 100...............2

By solving 1 and 2 we get the fifth number e= 135-100= 35

HOPE IT HELPED YOU.............