Question

12,15,18____99 find the value an

Answer 1

Answer:

30 IS ANSWER

Hope it's help

Answer 2

Answer:

Step-by-step explanation:

The given A.P.

12, 15, 18, ........, 99

Here, first term (a) = 12, common difference(d) = 15 - 12 = 3  and

To find, the value of n = ?

Let n be the number of terms.

We know that,

The nth term of an AP

∴ 12 + (n - 1)3 = 99

⇒  (n - 1)3 = 99 - 12 = 87

⇒  n - 1 = = 29

⇒ n = 29 + 1 = 30

Thus, the value of n is equal to 30.