10.-21 divided by -3 A:-7. B:-24 C:7 D:24
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Start with a deck of 52 cards. Draw 1 card. Probability of drawing a diamond first:
Now draw another single card from the deck, which now contains 51 cards. Probability of drawing a spade:
Draw 1 last card. The deck has 50 cards left, and 12 of these are diamonds. Probability of drawing a diamond:
So the probability of drawing a diamond, then a spade, then another diamond is
Now draw another single card from the deck, which now contains 51 cards. Probability of drawing a spade:
Draw 1 last card. The deck has 50 cards left, and 12 of these are diamonds. Probability of drawing a diamond:
So the probability of drawing a diamond, then a spade, then another diamond is