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 If a dice is rolled once, what is the probability that it will show a multiple of 3 ?

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dododima | Student, Grade 11 | (Level 2) Honors

Posted June 22, 2010 at 7:11 AM via web

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 If a dice is rolled once, what is the probability that it will show a multiple of 3 ?

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hala718 | High School Teacher | (Level 1) Educator Emeritus

Posted June 22, 2010 at 7:13 AM (Answer #1)

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The die has 6 faces contains numbers 1 through 6

The options of having a multiple of 3 is having 3 or 6 which is 2 chance

Then the probability would be the chances of having a multiple of 3 of the 6 faces of the die which is 6.

Then the probability is 2/6=1/3

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brianevery | High School Teacher | (Level 2) Adjunct Educator

Posted June 22, 2010 at 7:24 AM (Answer #2)

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There are 6 numbers on the die, 1, 2, 3, 4, 5, 6,

of those 6 numbers only 2 are multiples of 3,

3 and 6 (3*1, and 3*2) so the probability of rolling a multiple of 3 is 2/6 or reduced, 1/3

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