If you add up the numbers 1 - 200 consecutively (1+2+3+4+5 ..... + 200) the total is?

20200

20050

20100

None of these

The sum of the first n natural numbers can be calculated using the formula:

n(n + 1)/2

Here, n = 200:

Sum = 200(200 + 1)/2

= 200 * 201 / 2

= 20100