Math, asked by pummy79, 11 months ago

find the sum of the first n terms of the series 3 + 7 + 13 + 21 + 81 +......

Answers

Answered by sandhyashukla31

1

Answer:

62 ................................... xd

Answered by arham64

1

Answer:

an=n/2(2×3+ n-1)4 follow me please

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