Question

probability of getting a white ball and a black ball from a bag containing 4 white balls and 6 black balls without replacement is​

Answer 1

Step-by-step explanation:

Bag has 4 white balls and 6 black ball. total balls =10

case1: picking white first and black next

probability of picking a white first

= 4c1/10c1

=4/10

=2/5

and now probability of picking a black from remaining =10-1=9

= 6c1/9c1=6/9

=2/3

so the probability of white first and black next is

2/5×2/3=4/15

case2: picking black first and white next

probability of picking black first =6/10= 3/5

and now probability of picking white from remaining =4/9

probability of black first and white next=3/5×4/9= 4/15