mariapadron mariapadron

19-09-2020
Mathematics

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You randomly pull a rock from a bag of rocks. The bag has 2 pink rocks, 4 green rocks, 5 speckled rocks, and 5 black rocks.

You randomly pull a rock from a bag of rocks The bag has 2 pink rocks 4 green rocks 5 speckled rocks and 5 black rocks class=

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mhanifa mhanifa

19-09-2020

Answer:

11/16
1/8

Step-by-step explanation:

Total number of rocks:

2 + 4 + 5 + 5 =16

Probability of not black:

P(not black) = number of not black/total number
P(not black) = (2+4+5)/16 = 11/16

Probability of pink:

P(pink) = number of pink/total number
P(pink) = 2/16 = 1/8

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