# Arithmetic Progressions

#### Answer:

In the given problem, we need to find the common difference and the next four terms of the given A.P.

(i)

Here, first term (*a*_{1}) =1

Common difference (*d*)

Now, we need to find the next four terms of the given A.P

That is we need to find

So, using the formula

Substituting in the above formula

Substituting *n *= 5*, *we get

Substituting *n *= 6*, *we get

Substituting *n *= 7*, *we get

Substituting *n *= 8*, *we get

Therefore, the common difference is and the next four terms are

(ii)

Here, firs...

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