Question

Which term of the A.P.11,8,5,2,...is -151?​

Answer 1

Answer:

Use the formula :

tn = a+(n-1)×d

Step-by-step explanation:

Here,

tn = -151, a = 11, d = -3, n =?

substituting the values in the formula,

-151 = 11 + (n-1) × (-3)

-151-11 = (n-1) × (-3)

-162 = (n-1) × -3

-162/3 = n-1

-54+1 = n

hence,

n = 55

Hope it helps :)