Question

Find the number of terms in the A.P;
7,13,19,......,205

Answer 1

hope it would help you....

Answer 2

Answer:

a=7

d=6

an=205

n=?

an=a+(n-1)d

205=7+(n-1) 6

205-7=(n-1) 6

198/6=(n-1)

33=(n-1)

so therefore

n=33+1

n=34

so therefore there are 34 terms in A. P