Question

Sum of first n natural number is …… .

(a)

2

n

(b)

2

n +1

(c)

2

n(n +1)

(d) none of these​

Answer 1

Answer:

Sum of the First n Natural Numbers

We prove the formula 1+ 2+ ... + n = n(n+1) / 2, for n a natural number.

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