1 + 2 - 3 + 4 - 5 +............ 100 = ?

0 ⤊

equals?

108.....

2006-06-18 21:43:37 · answer #1 · answered by ♥Cutie Emily♥ 5 · 0⤊ 0⤋

The answer is 52

1+100 - 49 = 52

50 pairs: (1+100) + 49(-1)

2006-06-19 04:46:59 · answer #2 · answered by Jimbo 5 · 0⤊ 0⤋

101=100

2006-06-19 04:42:40 · answer #3 · answered by so_hot 2 · 0⤊ 0⤋

2006-06-19 04:43:41 · answer #4 · answered by Thinking 1 · 0⤊ 0⤋

= 2+-1+2-3+.....
=2-(50^2)+2(1+2+3+...........50)
=2-(50^2)+2(50*51/2)
=2-(50^2) +(50*51)
=2+50
=52

2006-06-19 06:43:24 · answer #5 · answered by robin 3 · 0⤊ 0⤋

it is - something!

2006-06-19 04:44:14 · answer #6 · answered by ckgopi 3 · 0⤊ 0⤋