The general term of a sequence is given by an=-4n2+15 .Is the sequence an A.P..? If so, find its 15th term and the common difference.

The general term of a sequence is given by $a_{n} = - 4 n^{2} + 15$ .Is the sequence an A.P..? If so, find its 15th term and the common difference.

Match the items on the right to the items on the left.

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