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Two black balls and five white balls are placed in a bag. If Amy draws two balls from the bag, what is the probability that they are both white? Please show your work.

Respuesta :

musiclover10045

2 +5 = 7 total balls.

!st one being white = 5/7

2nd one being white = 4/6 = 2/3

Chance of both being white = 5/7 x 2/3 =  10/21

tramserran

      first ball                    and              second ball

5 white out of 7 total       x          4 white remaining out of 6 total remaining

       [tex]\frac{5}{7}[/tex]                              x               [tex]\frac{4}{6}[/tex]

[tex]= \frac{5*4}{7*6} = \frac{20}{42} = \frac{10}{21}[/tex]

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