Jin , Marco , and Myra cut a length of wire for an electronics project. Jin's wire was 25 hundredths of a meter long. Marcos was
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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