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Popular Word Problems >

A standard die is rolled. Find the probability that the number rolled is even. Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

Solução

A s t an d a r d d i e i s ro ll e d . F in d t h e p ro babi l i t y t ha t t h e n u mb er ro ll e d i s e v e n . E x p ress yo u r an s w er a s a f r a c t i o n in l o w es t t er m s or a d ec ima l ro u n d e d t o t h e n e a res t mi ll i o n t h .

Solução

\frac{1}{2}

+1

Decimal

0.5

Passos da solução

The possible outcomes when \mathrm{a die is rolled} is

{1, 2, 3, 4, 5, 6} .

Therefore, the number of possible outcomes:

6

The number of favorable outcomes of \mathrm{the number rolled is even}:

3

Probability

= \frac{number of favorable outcomes}{total number of outcomes}

= \frac{3}{6}

Eliminar o fator comum:

3

= \frac{1}{2}

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