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March 26, 2017

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There are 20 red yellow and green tiles in a bag. 1/2 of the tiles are not yellow. 1/5 of the tiles are red. What is the probability of randomly selecting a colored tile from the bag that is NOT green?

  • Probability/Stas - ,

    10
    20

  • Probability/Stas - ,

    does that mean sixty of them

  • Probability/Stat (correction) - ,

    1/5 = 4/20, so 4 tiles are red.

    1/2 or 10 are not yellow, so they are either red or green. Since 4 are red, the remaining 6 are green.

    Probability of NOT green = 1 - 6/20 = ?

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