Math, asked by pulipatimadhu477, 11 months ago

find the sum of first n positive integers

Answers

Answered by rakhijha887

2

search in YouTube you get my channel there I have solved

Answered by tisha840036

6

Answer:

Sn=n/2[2a+(n-1)d]

=n/2[2+(n-1)1]

=n/2[2+n-1]

=n/2(n+1)

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