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4 October, 10:39

From a srandard deck of 52 cards, what is the probability of drawing two five cards with replacement?

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  1. 4 October, 12:11
    0
    There are 4 5's in a deck of 52 cards so

    P (5) = 4/52

    Since the card is being replaced it will be the same probability the second time.

    P (5) = 4/52

    P (5) = 4/52 * P (5) = 4/52 = 16/2704 = 1/169
  2. 4 October, 13:23
    0
    Event A = drawing a card with a "5" on the label.

    There are 4 ways that event A could occur: drawing a '5' of hearts, 5 of spades, 5 of diamonds, or five of clubs.

    This is out of 52 cards total

    For one card,

    P (A) = 4/52 = 1/13

    For two cards,

    P (A and A) = P (A) * P (A)

    P (A and A) = (1/13) * (1/13)

    P (A and A) = 1/169

    We're able to multiply like this because the events are independent (replacement occurs).

    The answer as a fraction is 1/169

    The answer in decimal form is approximately 0.005917

    The answer as a percent is approximately 0.5917%
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