Math, asked by gayatri6126, 1 year ago

plz solve the question

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Answered by lokeshsingh92050

0

Answer:

Sn=860

a=2

an=41

Sn=n/2(a+an)

860=n/2(2+41)

860x2=n(43)

1720=nx43

1720/43=n

n=40

n=(c)

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