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شائع Word Problems >

two dice are rolled. What is the probability that the sum of the numbers rolled is a number greater than 9?

الحلّ

tw o d i ce a re ro ll e d . Wha t i s t h e p ro babi l i t y t ha t t h e s u m o f t h e n u mb ers ro ll e d i s a n u mb er g re a t er t han 9 ?

الحلّ

\frac{1}{6}

+1

عشري

0.16666 \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 the sum of the numbers rolled is a number greater than 9:

6

Probability

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

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

6 :

إلغ العوامل المشتركة

= \frac{1}{6}

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