In a large bag of marbles, 40% of them are red. A child chooses 4 marbles from this bag. If the child chooses the marbles at random, what is the chance that the child gets exactly one three red marbles?
A) 0.1536
B) 0.2304
C) 0.3456
D) 0.1920

Question

Quizplus · Accepted Answer

The probability of choosing a red marble is 0.4, and the probability of choosing a non-red marble is 0.6. The probability of choosing exactly one red marble is 4 * 0.4 * 0.6 * 0.6 * 0.6 = 0.1536.

In a Large Bag of Marbles, 40% of Them Are