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Which term of the AP 121, 117, 113, …. is its first negative term?

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Which term of the AP 121, 117, 113, …. is its first negative term?

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The given AP is 121, 117, 113, ……

Here, a = 121 and d = 117-121 = -4

Let the nth term of the given AP be the first negative term. Then,

Hence, the 32nd term is the first negative term of the given AP.

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