Mark the correct alternative in the following:
If in an A.P., and , where denotes the sum of r terms of the A.P., then is equal to

Here, S_n=n²p

Now, substituting n=p we get

S_p=p²p=p³
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Question

Mark the correct alternative in the following: If in an A.P., and , where denotes the sum of r terms of the A.P., then is equal to

Philoid · Accepted Answer

Here, S_n=n²p

Now, substituting n=p we get

S_p=p²p=p³

Mark the correct alternative in the following:If in an A.P., and , where denotes the sum of r terms of the A.P., then is equal to