what is the name of this formula (k(k+1))/2
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Hi ,
We know that sum of first n natural
numbers = n( n + 1 ) /2
Similarly ,
Sum of first k natural numbers
= Sk
1 + 2 + 3 + ....+ k = k(k +1 ) /2
I hope this helps you.
:)
We know that sum of first n natural
numbers = n( n + 1 ) /2
Similarly ,
Sum of first k natural numbers
= Sk
1 + 2 + 3 + ....+ k = k(k +1 ) /2
I hope this helps you.
:)
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