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Popolare Word Problems >

If two dice are rolled, what is the probability of getting a sum of 7?

Soluzione

I f tw o d i ce a re ro ll e d, w ha t i s t h e p ro babi l i t y o f g e tt in g a s u m o f 7 ?

Soluzione

\frac{1}{6}

+1

Decimale

0.16666 \dots

Fasi della soluzione

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 getting a sum of 7:

6

Probability

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

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

Cancella il fattore comune:

6

= \frac{1}{6}

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