It is the morning of the sandcastle-building competition at the beach. Dory has been looking forward to this event for months. A
2 answers:
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Answer:
The answer for your question is 2.
Step-by-step explanation:
Assuming that each marble can be picked with equal probability, we notice that there is a total of
marbles, of which 2 are red.
So, the probability of picking a red marble is
In fact, as in any other case of (finite) equidistribution, we used the formula