If a die is rolled, what is the probability that the number rolled will not be a "5"?

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If a die is rolled, what is the probability that the number rolled will not be a "5"?

Possible rolls:
{1, 2, 3, 4, 5, 6}

Probability of not a 5 means:
{1, 2, 3, 4, 6}

P(Not 6) = 1 - P(6)
P(Not 6) = 1 - 1/6
P(Not 6) = 5/6