Question

An urn contains four red marbles, and five blue marbles. What is the probability of selecting at random, without replacement, two red marbles?

A. 16/72
B. 20/72
C. 12/72
D. 20/81

Answer 1

Answer: C. 12/72

Step-by-step explanation: 4/9 (the total of red marbles out of the urn) times 3/8 ( the probability of picking a red marble and how many marbles would be left) = 12/72

Btw I need help answering the rest of the questions if you don’t mind sliding the answers!