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פּוֹפּוּלָרִי Word Problems >

A die is rolled twice. Find the probability of getting both odd numbers

פתרון

A d i e i s ro ll e d tw i ce . F in d t h e p ro babi l i t y o f g e tt in g b o t h o dd n u mb ers

פתרון

\frac{1}{4}

+1

עשרוני

0.25

צעדי פתרון

Find the probability of getting odd:

\frac{1}{2}

Find the probability of getting odd:

\frac{1}{2}

Since the events are independent, Use the formula

P (X_{1} \land X_{2} \land \dots \land X_{k}) = P (X_{1}) \cdot P (X_{2}) \cdot \dots \cdot P (X_{k})

= \frac{1}{2} \cdot \frac{1}{2}

\frac{1}{2} \cdot \frac{1}{2} = \frac{1}{4}

= \frac{1}{4}

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