find the Probability

Probability Level 2

Random Experiment

Abox have 3red ball
4blue ball we Pull two balls what is the probability if The two colors are different


The answer is 0.57142.

Aly Ahmed by Aly Ahmed , 34, Egypt

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1 solution

The required probability is ( 3 1 ) ( 4 1 ) ( 7 2 ) \Large\frac{\binom{3}{1}\binom{4}{1}}{\binom{7}{2}} = 4 7 = \Large\frac{4}{7} ≈ 0.5714 \approx 0.5714

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