Math, asked by singhekamjot, 11 months ago

in an ap if a =-2.5 d=0.5 and an=7.5 what is n​

Answers

Answered by disha11100
11

HEY MATE!

HERE IS YOUR ANSWER:

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Answered by rathi07
4

Answer:

as añ=a+(n-1)d

therefore n=(añ-a)/d+1

so n=21

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