Question

A bag contains 7 red, 4 blue, and 6 white marbles.

Find the probability of randomly picking a red marble, replacing it, and then picking a blue marble.

Answer 1

28/289

Explanation:

7 red, 4 blue, and 6 white = 17 marbles

P ( red ) = number of red / total

= 7/17

Replace the marble

7 red, 4 blue, and 6 white = 17 marbles

P ( blue ) = number of blue / total

= 4/17

P (red, replace, blue) = 7/17* 4/17

=28/289