9709 P63 - Jun 2012 - Q5
3043
Suzanne has 20 pairs of shoes, some of which have designer labels. She has 6 pairs of high-heeled shoes, of which 2 pairs have designer labels. She has 4 pairs of low-heeled shoes, of which 1 pair has designer labels. The rest of her shoes are pairs of sports shoes. Suzanne has 8 pairs of shoes with designer labels in total.
Suzanne chooses 1 pair of shoes at random each day.
Find the probability that Suzanne wears a pair of shoes with designer labels on at most 4 days out of the next 7 days.
