Probability with marbles?

Question

A box contains four red marbles, seven white marbles, and five blue marbles. If one marble is drawn at random, find the probability for each of the following:

a. A blue marble is drawn: ________

b. A red or blue marble is drawn: _____

c. Neither a blue or red marble is drawn

Answer 1

5/16

4/16+5/16=9/16

7/16

Answer 2

a) 5/16

b) 9/16

c) 7/16

Answer 3

total = 16

a. 5/16

b. 9/16

c. must be white 7/16

Answer 4

So the total number of marbles are 4 red + 7 white + 5 blue = 16 marbles.

a. A blue marble is drawn: 5/16

b. A red or blue marble is drawn: 4+5/16 = 9/16

c. Neither a blue or red marble is drawn. (meaning white marble is drawn): 7/16.

Hope I helped and choose me for best answer!

Answer 5

a) 5/16

b) 9/16

c) 7/16