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5-86.

Darnell is designing a new game. He will have different-colored blocks in a bag. While a person is blindfolded, he or she will reach in and pull out a block. The color of the block determines the prize according to Darnell’s sign at right.

      blue → small toy
  purple → hat
   green → large stuffed animal

  1. If he wants players to have a probability of winning a small toy, how many blue blocks should he have?

    Since picking a blue block gives a small toy prize, Darnell can consider the probability of picking a blue block as the probability of winning a small toy.

    If he wants players to have a probability of winning a small toy, of the  blocks in the bag should be blue.

    blue blocks

  2. If he wants players to have a probability of winning a large stuffed animal, how many green blocks should he have?

    See part (a).