MathDB

Integers

1

36

are written in each "Neuro-Millions" bulletin. A bet on "Neuro-Millions" consists of choosing

6

of these

36

numbers. Then,

6

numbers between

1

and

36

are drawn, and these constitute the key to "Neuro-Milh˜oes". A bet is awarded if it does not contain any of the key numbers. How many bets, at least, are necessary to guarantee a prize?

6

Problems(1)