Question

Find the 21st term of the ap whose first two terms are -3 and 4

Answer 1

Answer:

n=21

t1=a= -3

t2=4

d=t2-t1= 4-(-3)=7

Step-by-step explanation:

Now,

By using formula

tn = a+(n-1)d

t21= -3 +(21-1)7

=137

Hope it helps..