Question

which
term of A P:21, 18, 15, ...is - 88?​

Answer 1

Answer:

See below

Step-by-step explanation:

AP: 21 , 18 , 15...

a=21. d=-3

nth term= a+ (n-1)d

-88 = 21 + (n-1) (-3)

(-21-89)/-3 = n-1

n-1=36.33 - doesn't reveal a integer so -88 is not part of the given AP or given number is incorrect