Question

Find whether –150 is a term of the A.P. 17, 12, 7, 2, ... ?​

Answer 1

Answer:

a=17, d=-5 to find -150 is a term of ap

• an=a+(n-1)d =-150 =17+(n-1)-5

-150=17-5n+5

-150=22-5n

-150-22=-5n

-128=-5n

n=128/5(not possible) -150 is not a term of given ap