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شائع Word Problems >

a pair of standard dice are rolled. find the probability of rolling sum of 2 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 s u m o f 2 w i t h t h ese d i ce .

الحلّ

\frac{1}{36}

+1

عشري

0.02777 \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 sum of 2 with these dice:

1

Probability

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

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

6^{2} = 36

= \frac{1}{36}

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