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What is the probability of rolling a number divisible by five on a fair die?
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We know that a fair die has six faces numbered from one to six.
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And the die is equally likely to land on each face.
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The only one of these numbers that is divisible by five is five.
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When dealing with equally likely outcomes, the probability of an event occurring can be written as a fraction, where the numerator is the number of successful outcomes and the denominator is the number of possible outcomes.
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When rolling a die, there are six possible outcomes.
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As only one of these is divisible by five, there is one successful outcome.
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The probability of rolling a number divisible by five on a fair die is one out of six or one-sixth.