Question

The times will never be the same


A marble is drawn at random first from a jar containing four black and four white marbles, and then from a jar containing six black and two white marbles. What is the probability of drawing two black marbles?



A. 3/8
B. 1/2
C. 5/8

Answer 1

I think its A

Answer 2

You sure?

Answer 3

Why do you think that?

Answer 4

3/8 is correct

Answer 5

Thanks

Answer 6

P in first case = 1/2
P in second case = 3/4

so final prob will be 1/2 multiplied by 3/4
= 3/8

Answer 7

will the probability of drawing a black marble from the first jar is 1/2 and the probablility of getting a black from the second jar is 6/8 and when you multiply 1/2 by 6/8 you get 3/8

Answer 8

(4/8)x(6/8)=3/8

Answer 9

Which of the following represents the number of subsets of five elements can be formed from a set of six elements?



A. 5!
B. C(6, 5)
C. P(6, 5)