Question

which term of an AP 5, 2, - 1.... will be- 22

Answer 1

a=5
d=2-5=-3
an=-22

We know
an= a+(n-1)d
-22=5+(n-1)(-3)
-27=-3n+3
-27-3=-3n
-30=-3n
n=10

Answer 2

Hi !

the ap is :-
5,2,-1 ...

a = 5 
d = -3

an = -22

an = a + (n-1)d
-22 = 5 + (n-1)-3
-27 = (n-1)-3
9 = n - 1
n = 10

10th term will be -22