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Arithmetic Progressions

Answer:

In the given problem, we need to find the number of terms in an A.P

(i) 25, 50, 75, 100 …

We are given,

Let us take the total number of terms as n.

So,

First term (a) = 25

Last term (an) = 1000

Common difference (d) =

Now, as we know,

So, for the last term,

Therefore, the total number of terms of the given A.P. is.

(ii) -1, -3, -5, -7 …

We are...

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