Question

write the formula for the sum of first n natural number​

Answer 1

Answer:

$\pink {Sum \: of \:first \:n\: natural \: numbers }$

$\green {= \frac{n(n+1)}{2}}$

Step-by-step explanation:

$\pink {Sum \: of \:first \:n\: natural \: numbers }$

$= \frac{n(n+1)}{2}$

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Answer 2

$Sum\ of\ first\ n\ natural\ number​=\frac{n(n+1)}{2}$

Find:

Sum of first n natural number​.

Computation:

$Sum\ of\ first\ n\ natural\ number​=\frac{n(n+1)}{2}$

Example:

1,2,3,4,5,6......28, where n = 28

$Sum\ of\ first\ n\ natural \ number​ \ = \frac{n(n+1)}{2} \\\\Sum\ of\ first\ 28\ natural\ number​=\frac{28(28+1)}{2} \\\\Sum\ of\ first\ 28\ natural\ number​= \frac{28(28+1)}{2} \\\\Sum\ of\ first\ 28\ natural\ number​=406$

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https://brainly.in/question/4648829