Terms Related to Probability

Q. Which of the following represents the sample space of tossing two coins simultaneously ?

1. {HH, TT}
2. {HH, TT, HT}
3. {TT}
4. {HH, TT, TH, HT}

Q. A customer reviews a shopping mall between 1 to 5 stars. Which of the following represents sample points and sample space respectively for the customer's star rating ?

1. Sample points: 1, 2, 3, 4, 5
   Sample space: {1, 2, 3, 4, 5}
2. Sample points: 1, 3, 4, 5
   Sample space: {1, 2, 4, 5}
3. Sample points: 1, 2, 3, 4, 5
   Sample space: {1, 2, 5}
4. Sample points: 2, 3, 4, 5
   Sample space: {1, 2, 3, 4, 5}

Q.

Rohan attends a test with multiple choice questions with no negative marking. There were fifty questions and each question had four marks for answering right. What is the sample space of marks that Rohan could score?

1. {0, 4, 8, 12, ..... 200}

2. {0, 1, 2, 3, ..... 50}

3. {0, 1, 2, 3, ..... 200}

4. {0, 4, 8, 12, ..... 50}

Q. Three unbiased coins are tossed together, then which of the following is true?

1. The probability of getting exactly 2 heads is $\frac{1}{2}$
2. The probability of getting atleast one head is $\frac{5}{8}$
3. The probability of getting almost 2 tail is $\frac{3}{8}$
4. The probability of getting exactly one tail is $\frac{3}{8}$

Q. Which of the following represents the sample space of tossing two coins simultaneously ?

1. {HH, TT}
2. {HH, TT, HT}
3. {HH, TT, TH, HT}
4. {TT}