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Arithmetic Progressions

Answer:

A.P: a, a+d, a+2d …

Here, we first need to write the expression for

Now, as we know,

So, for nth term,

Similarly, for kth term

So,

So,

(i) In the given problem, we are given 11th and 13th term of an A.P.

We need to find the common difference. Let us take the common difference as d and the first term as a.

Here,

Now, we wil…

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