Question

find the difference between arithmetic means of all even and odd numbers between 50 and 60

Answer 1

mean= sum of all no./no. of no.s
even no.s=52,54,56,58,60
odd no.s=51,53,55,57,59
mean of odd no.s=54.8
mean of even no.s=56
difference=56-54.8=1.2