Question

which term of GP 5,2,-1---- is
-22​

Answer 1

Answer:

Step-by-step explanation:

5 , 2 , -1 ......

a  =  5

d  =  2 - 5  =  - 3

$a_n=a+(n-1)d\\\\-22=5+(n-1)(-3)\\\\-3(n-1)=-22-5\\\\-3n+3=-27\\\\-3n=-27-3\\\\-3n=-30\\\\n=\dfrac{-30}{-3}\\ \\n=10$