Question

Harold randomly selected one square tile and one round tile from the sets shown below. What is the probability that Harold selected a pink square tile, and either a red or a blue round tile?
Square tiles: 20 green, 16 pink, 9 red, 10 yellow, 5 blue.Round tiles: 5 black, 4 pink, 9 red, 6 blue, 3 yellow, 8 green, 1 white.
a.
3/5
b.
14/60
c.
1/9
d.
4/45

Answer 1

Total squares = 20+16+9+10+5 = 60, so P(pink square) = 16/60 = 4/15.
Total rounds = 5+4+9+6+3+8+1 = 36, and red or blue rounds = 9+6 = 15, so P(red or blue round) = 15/36 = 5/12.
Multiply: (4/15)*(5/12) = 20/180 = 1/9.

Answer: c.