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# For every positive integer n, the nth term of a sequence is given by

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Re: For every positive integer n, the nth term of a sequence is given by [#permalink]
­Why am I not able to get the answer using sum of AP formula ? sum = n/2(1st term + last term) ?
Pls let me know.
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Re: For every positive integer n, the nth term of a sequence is given by [#permalink]
ShilpiAgnihotrii wrote:
­Why am I not able to get the answer using sum of AP formula ? sum = n/2(1st term + last term) ?
Pls let me know.

­That formula, as you correctly wrote, applies to the arithmetic progression. Do we have an arithmetic progression here?
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Re: For every positive integer n, the nth term of a sequence is given by [#permalink]
Bunuel wrote:
ShilpiAgnihotrii wrote:
­Why am I not able to get the answer using sum of AP formula ? sum = n/2(1st term + last term) ?
Pls let me know.

­That formula, as you correctly wrote, applies to the arithmetic progression. Do we have an arithmetic progression here?

­Thanks Bunuel for highlighting the gap in my understanding!
Re: For every positive integer n, the nth term of a sequence is given by [#permalink]
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