Math, asked by bhanuprakashprakash1, 6 months ago

The sum of 1+3+5+7+9______+81 is

Answers

Answered by vanshmalik6606

6

Answer:

1681

Step-by-step explanation:

as 81 is a odd no. and no. existing in the chain=81+1/2=41

sum of first 41 odd natural nos.= n^2=41×41=1681

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