A Red Ball in a Box

Probability Level pending

If we have 6 balls in a box, 5 blue and one red, and we pick two balls, what is the probability to pick the red one?

25% 66% 50% 33%

Francisco Nazário by Francisco Nazário , 20, Brazil

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1 solution

First, count the ways to pick two balls in six. ( 6 2 \frac{6}{2} = 15. So, count the times that the red ball apears in a pair, 5 times. 5 divided by 15 = 33%

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