Question

A bag contains 5 blue marbles, 2 black marbles, and 3 red marbles. A marble is randomly drawn from the bag.

The probability of not drawing a black marble is
. The probability of drawing a red marble is
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Answer 1

Answer: P = 3/10

Explanation:

Given: The total number of marbles - 5 + 2 + 3 = 10

The number of black balls = 2

Then the number of balls which are not black 10 - 2 = 9

Then the probability of not drawing a black marble is given by

P(Not Black) = Not black = 8/10 = 4/5

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Total

The number of red marbles = 3

Then the probability of drawing a red marble is given

P(Red) = Red = 3/10

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Total