Question

6. A box contains 4 red and 6 blue balls.if two balls are drawn one from to an other, what is the probability that

a.all the balls selected are red?
b. getting two blue
c.getting a red first and blue second​

Answer 1

Answer with solution:

Let x be the number of red balls

Let y be the number of blue balls

a. P(x=2) = 4/10 • 3/10

= 12/100 or 3/25

b. P(y=2) = 6/10 • 5/10

= 30/100 or 3/10

c. P = 4/10 • 6/10

= 24/100 or 6/25