Question

What is the sum of of each of the following series of numbers? 1+3+5+----+997+999

Answer 1

Answer:

998,001

Step-by-step explanation:

Sum (S) of n terms in an arithmetic sequence is given by;

$S_{n}$ = $\frac{n}{2}$(2a + d(n-1)) , where d is the common difference

$S_{999}$ = $\frac{999}{2}$(2 + 2(999-1)) = 998,001