Add all two digit numbers to 100

Question

0

556

1

Guest Jan 4, 2015

+128408

+5

Best Answer

I'm assuming that you're talking about just the positive integers......

This is just equal to the sum of the first 100 integers minus the sum of the first 9 integers, and is given by

(100)(101)/2 - (9)(10)/2 =

5050 - 45 =

5005

CPhill Jan 4, 2015

CPhill · Answer 1 · 2015-01-04T02:16:44

I'm assuming that you're talking about just the positive integers......

This is just equal to the sum of the first 100 integers minus the sum of the first 9 integers, and is given by

(100)(101)/2 - (9)(10)/2 =

5050 - 45 =

5005