You have 10 marbles: 5 are blue, and 5 are red. You randomly select 2 marbles without looking. What is the probability that you picked one of each color?
Category: Brain · Difficulty: hard
Hint: Consider the combinations of picking the marbles.
Answer
0.5
Explanation
The probability of one blue and one red is found by calculating favorable outcomes versus total outcomes.
This is a hard brain riddle — a tricky one that takes a little thought. The answer is 0.5.
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