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Answers for “连续三次掷出偶数的概率是多少?”

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To calculate the probability of rolling an even number three times, first find the probability of rolling an even number on a single roll, which is 1/21/2 for a fair six-sided die. Then, assuming the three rolls are mutually independent, multiply this single-roll probability by itself three times: 12×12×12=18\frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} = \frac{1}{8}.

Conditions: The die is fair (six-sided, equally likely outcomes).; The three rolls are mutually independent.; The target event is rolling an even number on every one of the three rolls.

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The assumption used is that the rolls are mutually independent. This means that the outcome of one roll does not affect the probability of the outcome of any other roll.

Conditions: The model assumes mutual independence of the three rolls.; Fairness of the die alone does not establish independence.; The probability of an event on one roll is unaffected by events on other rolls.