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Mathematics 10 Online
OpenStudy (anonymous):

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?

OpenStudy (anonymous):

1/5?

OpenStudy (anonymous):

what are the options?

OpenStudy (anonymous):

1/5....4/6...4/5....5/6.... that saw it it 4/5 since one is taken away

OpenStudy (anonymous):

The probability of picking a card with a rose on it before she picked a card up would be 5/6

OpenStudy (anonymous):

so after would be 4/5 after

OpenStudy (anonymous):

since one rose card was taken out

OpenStudy (anonymous):

so 4/5

OpenStudy (anonymous):

do you get it?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

okay, bye :) Have a nice day!

OpenStudy (anonymous):

same to you

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