Question

There are 6 cards with a picture of a rose and 4 cards with a picture of a daisy. Alfa keeps all the cards face down on a table with the pictures hidden and mixes them up. She then turns over one card and finds the picture of a rose on it. She removes this card from the table and turns over another card without looking. What is the probability that the card that Alfa turns over has a rose on it? 1 over 6 1 over 3 5 over 10 5 over 9

Answer 1

It's 5 over 9 because you start off with 10 cards (6 roses 4 daisies) then you pick a rose. Then it become's 5 over 9 since there are only 5 roses left and 9 total cards left.