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פּוֹפּוּלָרִי Word Problems >

Suppose you are going to draw two cards from a standard deck. What is the probability that the first card is an even card and the second card is Queen?

פתרון

S u pp ose yo u a re g o in g t o d r a w tw o c a r d s f ro m a s t an d a r d d ec k . Wha t i s t h e p ro babi l i t y t ha t t h e f i rs t c a r d i s an e v e n c a r d an d t h e seco n d c a r d i s Q u ee n ?

פתרון

\frac{1}{13}

+1

עשרוני

0.07692 \dots

צעדי פתרון

There are

52

cards in the deck

Total number of queens is

4

Probability

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

= \frac{4}{52}

= \frac{1}{13}

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