If two cards are drawn without replacement from an ordinary deck, find the probability of a queen and a 9 being drawn. The probability of a queen and a 9 being drawn is (Type an integer or a simplified fraction.)

Soluzione

I f tw o c a r d s a re d r a w n w i t h o u t re pl a ce m e n t f ro m an or d ina ry d ec k, f in d t h e p ro babi l i t y o f a q u ee n an d a 9 b e in g d r a w n . T h e p ro babi l i t y o f a q u ee n an d a 9 b e in g d r a w n i s (T y p e an in t e g er or a s im pl i f i e d f r a c t i o n .)

The number : 9

Fasi della soluzione

Represent the number with

x

A.T.Q.:

9 = x

Risolvi per

x, 9 = x : x = 9

The number : 9