Robert tossed a fair coin 3 times.
Robert tossed a fair coin 3 times. What is the probability that the coin landed heads up exactly twice?
Answer/Solution
0.375
Steps/Work
Total number of outcomes = 2 * 2 * 2 = 8
Out of 3 times we need heads exactly 2 times = 3C2 = 3
Probability = 3/8 = 0.375
The answer is, therefore, (C).
Out of 3 times we need heads exactly 2 times = 3C2 = 3
Probability = 3/8 = 0.375
The answer is, therefore, (C).