Question

A bag contains six marbles: two red, one yellow, and three blue. What is the probability of randomly selecting two red marbles in a row, assuming the marbles are not put back in the bag after being drawn?
A 1/15
B 2/15
C 1/10
D 1/9

Answer 1

Answer:

A.  1/15.

Step-by-step explanation:

There are a total of  6 marbles, so:

Probability (Red on first draw) = 2/6 = 1/3.

Probability (Red on second draw) = 1/5.

Required probability = 1/3 * 1/5 = 1/15.

NOTE: The probabilities are multiplied because the 2 events are independent.