Question

Which term of ap is the first megative term 121, 117?

Answer 1

Answer:

given,a=121,d=117-121=-4,an=0

we know that an= a +[n-1]d

0=121 +[n-1]4

0=121-4n+4

125=4n

n=31.25

therefore the first negative term of the AP is 32nd one.

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