Question

you have just win a prize that pays you 1$ for the first day , 2$ on the second day 3$ on the third day and so on for the month August how much money did I win

Answer 1

The answer is $31 dollars because there is 31 days in August

Answer 2

Hello,

31 days in augustus.
1+2+3+...+31=s
31+30+...+1=s
2s=(1+31)*31
s=32*31/2=16*31=496 ($)