Question

which term of an AP 113,108,103........ is the first negative term?

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Answer 1

here a = 113
d= -5
An<0
a+(n-1)d<0
113+(n-1)-5<0
113-5n+5<0
118-5n<0
5n>118
n>23.5
first negative term is 24th term

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Answer 2

                                     Δ                                                                        Answer is correct  ; )  ||