Question

The n th term of an A.P. 5, 2, -1, -4, -7 … is

Answer 1

Step-by-step explanation:

a=5,

d=2-5= -3

an= -7

an=a+(n-1)d

-7=5+(n-1)-3

-7-5=(n-1)-3

-12=(n-1)-3

-12/-3=n-1

4=n-1

n=4+1

n=5