Question

the numbers 1 through 9 are written on nine slips of paper and placed into a hat. If slips are selected from the hat one at a time at random, what is the minimum number that must be chosen to ensure that the sum in these slips exceeds 10

Answer 1

How bad could it get?
1+2+3+4 = 10
so at least five slips to be sure to get a sum greater than ten.