Question
you choose a marble at random from a bag containing 10 red marbles, 5 yellow marbles, and 1 pink marble. You replace the marble and then choose again. Find the probability of P(both red)
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Answer to a math question you choose a marble at random from a bag containing 10 red marbles, 5 yellow marbles, and 1 pink marble. You replace the marble and then choose again. Find the probability of P(both red)
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4.987 Answers
red marbles = 10
yellow marbles = 5
pink marbles = 1
total marbles = red + yellow + pink = 10 + 5 + 1 = 16
probability of red marble (1st pick) = 10/16
probability of red marble (2nd pick with replacement) = 10/16
probability of both red = \frac{10}{16}\cdot\frac{10}{16}=\frac{100}{256}=\frac{25}{64}
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