Using a standard deck of cards--shuffled: select a card from the deck. Place the card back in the deck. Select another card. What is the probability tha both cards will be black?
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Anonymous
ANSWERS: 1
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As both selections come from the full deck of 52 cards, then the chance of drawing a black card on each draw is 50% (or one half), therefore the chance of drawing two black cards in a row is 25% (i.e one half multiplied by one half). Another way to look at this is to count the possibilities. You could draw: 1. One red card followed by another red card. 2. One red card followed by one black card. 3. One black card followed by one red card. 5. One black card followed by another black card. As there are only four possible outcomes, and only one of these is the one you want, then the chances are 25%, or 1 in 4.
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