Question

1. There are 5 gray, 4 red, 5 white, 2 green, and 2 navy marbles in a hat. You are going to
draw one marble and replace it and draw again. Find the probability for the following
events.
a) Draw red and green marbles.
b) Draw navy and white marbles.
c) Draw gray and gray marbles.

Answer 1

Answer:

As there are total 18 marbles and the sum of grey and red is 9.

Therefore probability of drawing grey or red marble is 9/18 and if it is not replaced then there will be 17 marble in the hat after drawing 1 marble earlier.