Question

Which term of Ap:23, 44, 65, 86, ....... Is 212

Answer 1

First term (a) = 23

Common difference (d) = 21

i know that ,

an = a + (n-1)d

Thus ,

212 = 23 + (n - 1)21

189 = (n - 1)21

9 = n - 1

n = 10

Therefore , 10th term of AP is 212

Answer 2

Answer:

10th term of AP is 212

Step-by-step explanation:

a = 23

d = 44 - 23 = 21

An = 212

We know that,

An = a + (n - 1)d

212 = 23 + (n - 1)*21

212 - 23 = (n - 1) 21

189 = (n - 1) 21

189 / 21 = n - 1

9 = n - 1

n = 9 + 1 = 10