# At least how many terms in the GP 20+28+36+.... is greater than 1000 ?

##
At least how many terms in the **AP** #20+28+36+....# is greater than #1000 ?#

At least how many terms in the **AP**

##### 3 Answers

Fourteen

#### Explanation:

#### Explanation:

Observe that the given **series** is **Arithmetic** with

Suppose that,

Since,

To **complete square,** we **add**

Please see below.

#### Explanation:

Here ,

Let ,

So , **the given terms are not in**

Let us try for

So, **the given terms may be in**

So ,

Hence ,there are infinitely many terms for which

But we can say that ,

" The least value of