There is a bag with 10 marbles. There are 6 blue marbles and 4 red marbles. What is the probability of picking 2 red marbles without replacement?

Answer 1

its 4/10*3/9 = 2/5*1/3 = 2/15 ur welcome :)

Answer 2

there are 10C2 ways of picking two marbles

there are 4C2 ways of picking two red marbles

p(2 red) = 4C2 / 10C2

Answer 3

Probability of picking 2red without replacement=4/10×3/9=2/5×1/3=2/15