Question

find the sum of the first N positive integers​

Answer 1

Answer:

Step-by-step explanation:

We can solve it by considering an arithmetic sequence starting from 1 to n with a common difference of 1. So the series is

1,2,3,......,n.

So we can write the arithmetic series as,

First term, a = 1

Common difference, d = 1

Number of terms, n

Now we know that the sum of an arithmetic series is ,

S_n = (n/2)×[2a+(n-1)d]

So plugging in the values we get,

S_n = (n/2)×[2+n-1]

This can be simplified and written as,

S_n = n(n+1)/2.

Answer 2

Step-by-step explanation:

Here Is Your Solution Bro