Question

An AP is 48,44,40. Find the nth term and the sum of the terms.

Answer 1

Answer:

Here given a.p. is_

48,44,40.

where, a(First term)=48, d(Common difference)=44-48= -4

and n(number of terms)=3

Now,we have

nth term = a+(n-1)d= 48+(3-1)-4= 48-8=40.Ans

Now,sum of terms= n/2(a+nth term) =3/2(48+40)=3/2×88=3×44=132.Ans