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A bag contains 2 red marbles, 7 blue marbles and 5 green marbles. If two marbles are
drawn out of the bag, what is the exact probability that both marbles drawn will be
blue?
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Answer :

aidandowdy

Answer:

The probability of drawing blue twice is 2/14

MrRoyal

The exact probability that both marbles drawn will be blue is 3/13

How to determine the probability?

The distribution of the marbles is given as:

Red = 2

Blue = 7

Green = 5

Assume the selection is a selection without replacement, then we have:

  • First selection: 7 blue marbles from a total of 14
  • Second selection: 6 blue marbles from a total of 13

So, the probability is:

P = 7/14 * 6/13

Evaluate the product

P = 3/13

Hence, the exact probability that both marbles drawn will be blue is 3/13

Read more about probability at:

https://brainly.com/question/251701

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