Math, asked by Pythagaros, 1 year ago

Tell me the answer of Q. 8 , 9 , 10 and 11

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Answered by pinky01

2

8th first, 9th ,10th answers

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Pythagaros: 8th ka choice wala bhi chaiye tha yrr

pinky01: k wait

pinky01: 7(a+6d)=11(a+10d)

pinky01: 7a+42d=11a+110d; 7a-11a+42d-110d=0; -4a-68d=0; -4(a+17d)=0; a+17d=0/-4; a+17d=0; a18=0

pinky01: therefore 18th term =0

Pythagaros: Thanks

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