Answers

The Brainliest Answer!
2016-03-27T14:51:48+05:30
The formula for finding the sum of any first 'n' numbers is -
n(n+1)/2 

Put 10 in the equation,
= 10(10+1)/2 
= 110/2
= 55
3 5 3
2016-03-31T17:10:30+05:30
Sum of first 10 nos.
=1+2+3+4+5+6+7+8+9+10
=55

the formula for that is 
n(n+1)/2 
1 5 1