Suppose we flip a fair coin three times. The probability of getting two heads is
Tap an option to check your answer.
DSE 2006 Question 9: Probability and Bayes' theorem
Answer and worked solution
Checking your account…
Plain-text version
Suppose we flip a fair coin three times. The probability of getting two heads is (A) 2/8 (B) 1/3 (C) 2/3 (D) 3/8
Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
What this question tests
This question is on Repeated trials: binomial and geometric probabilities, part of Probability and Bayes' theorem in Statistics.
Probabilities from independent repeated experiments.
TestStop has 14 past-paper questions on this subtopic; the nearest in year are below.
Similar questions from other papers
- Conditional Probability can be calculated by
- In a year of 366 days, what is the chance that three persons have different birthdays?
- If we twice flip a balanced coin, what is the probability of getting at least one head?
- Two cards are drawn from a full pack of 52 cards at random. The probability of getting a heart and a diamond is (*rounded off to two decimal places*).
- In a population of men in a city, 3% are observed to suffer from cancer, 15% are found to be smokers, while 10% are noticed to be either smokers or cancer patients. If…
Question from the DSE 2006 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.