Math, asked by amankumar4622, 1 year ago

q .no4 ..............

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Answered by jogender77
2
An = 2n - 3
a1 = 2(1) - 3
= -1
a2 = 2(2) - 3
= 1
a3 = 2(3) - 3
= 3
S3 = a1 + a2 + a3
= (-1) + 1 + 3
= 3
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