The numbers from 1 to 11 are drawn at random. Find the probability that the even numbers will all be drawn before the number 11.
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
There are:2, 4, 6, 8, 10 ==5 even numbers.
The probability is: 5/11 x 4/10 x 3/9 x 2/8 x 1/7 ==1 / 462
