Question

A bag contains both 10 blue and 10 red objects. There are 5 blue circles, 5 red circles, 5 blue squares and 5 red squares. If I draw out two objects from the bag what is the probability that both of them are circles?

A) 1/10
B) 1/4
C) 5/19
D) 9/38

Answer 1

P(red or a circle) = 4⁄16 + 7⁄16 - 4⁄16 = 7⁄16 = 43.8%

Explanation:

Answer 2

B) 1/4 because there are 4 groups and with those groups you can pick any of them