Question

Arethimatic mean ofeven numbers from 2 to 200 is

Answer 1

Answer:

number of terms in AP 2,4,6,....200 is n

200=2+(n-1)2 as a=2 d=2

n=100

as A.mean=sum of terms /Number of terms

A.mean=1/2 (2a+(n-1)d)

=1/2 (4+99×2)

=101