<3

back to commenting :) how's doing guys?
i was quiet absent for a moment got kicked from job :$
and grinding warhammer lately hope your doing fine lowkey lova all true G's :D

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Problem: Prove that the sum of the first n positive integers can be expressed as:

n(n+1)/2

Prove:

1 + 2 + 3 + ... + n = n(n+1)/2

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