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anonymous
 one year ago
There are 5 cards with a picture of a rose and 1 card with a picture of a daisy. Olga keeps all the cards face down on the 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 Olga turns over has a rose on it?
1/5
4/6
4/5
5/6
anonymous
 one year ago
There are 5 cards with a picture of a rose and 1 card with a picture of a daisy. Olga keeps all the cards face down on the 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 Olga turns over has a rose on it? 1/5 4/6 4/5 5/6

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, there are 6 cards in total. For the first card, what is the probability of flipping a rose?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the answer is she removed a rose card already. how many cards total will be your bottom variable how many cards remaining have roses will be your top variable

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0There are 5 roses and 6 cards in total. So the probability of choosing a rose on the first flip is 5/6. OK with that?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so my answer is 4/5 right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now, the first card is removed, so there remains 4 roses and 1 daisy left (a total of 5 cards). On this secon flip, what is the probability of flipping a rose?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have removed a card already so that card no longer counts ie \[5r+1l=6total\] \[5r1r=4r+1l=5t\] so 4r/5t

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0To get your final answer, you multiply the two individual probabilities together.\[P_{A \text{ then }B} = P_A \times P_B\]
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