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MathematicsMathematics
7 May, 23:19

The students are selling school pencils. If a red or green pencil is pulled from a bag, it is free. The bag contains:

5 red

10 green

15 yellow

20 blue

What is the probability that the first buyer will get a free pencil when randomly drawing one from the bag?

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Answers (2)
  1. 8 May, 01:07
    0
    Blue because there are more blue pencils than any other color in the bag.
  2. 8 May, 01:15
    0
    X=color pencil Red Green Yellow Blue

    prob 5/50 10/50 15/50 20/50

    50 is the total number of pencils

    P (X=Red U X=Green) = P (X=Red) + P (X=Green)

    U means union or "or"

    Since they are disjoint, you can add the probabilities together.

    =5/50+10/50

    =15/50

    =.3

    =30%
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Home » Mathematics » The students are selling school pencils. If a red or green pencil is pulled from a bag, it is free. The bag contains: 5 red 10 green 15 yellow 20 blue What is the probability that the first buyer will get a free pencil when randomly drawing one from
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