Question

given that the mean of five numbers is 27
if one of the numbers is excluded the
mean gets reduced by 2. Determine the
excluded number​

Answer 1

Answer:

a+b+x+y+z=27×5

a+b+x+y+z=135….(1)

If one no. is excluded let it be ‘ a'

Mean of 4 nos. is 25

b+x+y+z/4=25

b+x+y+z=25×4

b+x+y+z=100….. (2)

So, (1) -(2)

a=(135–100) =35

Excluded number is 35