Question

1+2+3+4+5+6+7+8+9+10=?

Answer 1

n(n+1)/2

Answer 2

really?? -_- don't you know addition?? lol

Answer 3

where n is total number
here n=10
10*(10+1)/2=10811/2=55

Answer 4

i just want to give a medal away

Answer 5

55 Use http://www.wolframalpha.com/ for math

Answer 6

1+2+3 = 6

6+4 = 10

5+10 = 15

6+15 = 21 7+21 = 28 8+28 = 36 9+36 = 45 10+45 = 55

I meant to type this earlier but my computer froze, lol