Taking marbles from a jar
Probability
Level
2
In a jar, there are 24 marbles. X are green, Y are blue and Z are yellow. If there is a 4 in 23 chance of taking a green then a blue marble without replacement and a 2 in 23 chance of taking a green then a yellow marble without replacement, how many green marbles are in the jar?
The answer is 12.
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1 solution
