math

a box contains 63 marbles 21 brown, 21 purple and 21 while what is the probability of picking a purple marble on the 1st attempt anor a brown marble on the second attempt?

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  2. 👎
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  1. purple- 1 in 63
    brown- 1 in 62

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    2. 👎
  2. purple- 21/63 reduced to 1/3
    brown- 21/62

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    2. 👎
  3. purple- 1/3
    brown 21/62

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    2. 👎
  4. the probability of picking the 2 marbles the way you described it is

    21/63 * 21/62

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    2. 👎

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