Math, asked by sanjam1905, 1 year ago

please solve this 2 QUESTIONS No. 6 and 7

please answer it

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Answers

Answered by prashantsuman

1

let third and seventh term be x and y

x+y=6
x×y=8
thus,x=2 and y=6
D=0.5
a=1
n=20
sn= 115

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