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شائع Word Problems >

A pair of standard dice are rolled. Find the probability of rolling a sum of 5 with these dice.

الحلّ

A p ai r o f s t an d a r d d i ce a re ro ll e d . F in d t h e p ro babi l i t y o f ro ll in g a s u m o f 5 w i t h t h ese d i ce .

الحلّ

\frac{1}{9}

+1

عشري

0.11111 \dots

خطوات الحلّ

The possible outcomes when two dice are rolled are

6 \cdot 6

Therefore, the number of possible outcomes:

6^{2}

Find the number of favorable outcomes of rolling a sum of 5 with these dice:

4

Probability

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

= \frac{4}{6 ^{2}}

\frac{4}{6 ^{2}} = \frac{1}{9}

= \frac{1}{9}

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