Question

A stack of index cards contains 2 pink cards, 3 green cards, and 1 yellow card, Nancy will pull 3 cards from the stack, one at a time without looking. She will NOT replace a card before pulling the next card. What is the probability that she will draw a yellow card, then a green card, then a pink card?

Answer 1

1/20

Explanation:

This is conditional probability there the number of possible outcomes reduces everytime a card is drawn

Therefore probability= 1/6×3/5×2/4=1/20