Math, asked by rana03024514843, 10 months ago

Find the sum of all the odd integers from 7 to 7291 inclusive

Answers

Answered by advocatedmdesai
3

Answer:

A.P=7,9,11 ......................................7289,7291.

an=a+(n-1)d

7291=7+(n-1)2

7291-7=2(n-1)

(n-1)=7284/2

(n-1)=3642

n=3643

Sn=n/2{a+an}

Sn=3643/2[7+7291]

Sn=3643/2[7298]

Sn=3642[3649]

Sn=13289658

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