The probability of drawing a black marble from a bag is 1/2, and the probability of drawing a white marble from the same bag is 1/4. What is the probability of drawing a white marble, replacing it, and then drawing a black marble?
1/8
1/3
3/4

Question

The probability of drawing a black marble from a bag is 1/2, and the probability of drawing a white marble from the same bag is 1/4. What is the probability of drawing a white marble, replacing it, and then drawing a black marble?
1/8
1/3
3/4

cwrw238 · Answer

independent events so  - as before -  multiply

anonymous · Answer

1/3
?

cwrw238 · Answer

naaa

to multiply fractions  - multiply top and bottom

1             1           1 x 1          1
--    x     --   =     ----  =     --
2             4            2 x 4          8