In an A.P., if the common difference (d)...

In an A.P., if the common difference (d)=-4 and the seventh term `(a_7)` is 4 then find the first term

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In an A.P. given that the first term (a) = 54, the common difference (d) = -3 and the n^(th) term (a_(n))=0 , find n and the sum of first n terms (S_(n)) of the A.P.

The first term of an A.P. is 5, the common difference is 3 and the last term is 80; find the number of terms.

If the first term a_(1) of an A.P. is 22, the common difference d=-4 and the sum to n terms is 64, find n. Explain the double answer.

In an A.P., if the first term is 22, the common difference is -4 and the sum to n terms is 64, find n .

Find the common difference of an AP whose first term is 4, the last term is 49 and the sum of all its terms is 265.

Find the common difference of the A.P whose first term is 12 and fifth term is 0.

Find the common difference if n^(th) term of AP is 7-4n.

The first term of an A.P. is 5 and the common difference is 4. Complete the following activity to find the sum of first 12 terms of the A.P.

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