Math

A prize machine randomly dispenses small toys. There are 1515 prizes left:
55 bouncy balls, 33 toy cars, 22 stickers, and 55 dinosaurs.

Kai gets 22 prizes. What is the probability that they are both toy cars?

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  1. A prize machine randomly dispenses small toys. There are 15 prizes left:
    5 bouncy balls, 3 toy cars, 2 stickers, and 5 dinosaurs.

    Kai gets 2 prizes. What is the probability that they are both toy cars?

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    2. 👎
  2. possibilities are

    A) 3/70
    B) 3/75
    C) 1/35
    D) 2/70

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    2. 👎
  3. If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

    3/15 * (3-1)/(15-1) = ?

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  4. 1/35
    There are 3C2 ways in getting both toy cars, and our sample space is 15C2.
    Thus, the probability becomes: 3C2/15C2 = 1/35

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    2. 👎
  5. PsyDAG is right

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    2. 👎

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