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Welcome to the Discrete Probability MCQs Page

Dive deep into the fascinating world of Discrete Probability with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Discrete Probability, a crucial aspect of Discrete Mathematics. In this section, you will encounter a diverse range of MCQs that cover various aspects of Discrete Probability, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Discrete Mathematics.

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Check out the MCQs below to embark on an enriching journey through Discrete Probability. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Discrete Mathematics.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Discrete Probability. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Discrete Probability MCQs | Page 3 of 10

Explore more Topics under Discrete Mathematics

Q21.
Suraj wants to go to Delhi. He can choose from bus services or train services to downtown Punjab. From there, he can choose from 4 bus services or 7 train services to head to Delhi. The number of ways to get to Delhi is?

a.

51

b.

340

c.

121

d.

178

Discuss
Answer: (c).121
Q22.
Two cards are chosen at random from a standard deck of 52 playing cards. What is the probability of selecting a jack and a Spade from the deck?

a.

\(\frac{4}{13}\)

b.

\(\frac{1}{13}\)

c.

\(\frac{4}{13}\)

d.

\(\frac{1}{52}\)

Discuss
Answer: (d).\(\frac{1}{52}\)
Q23.
If I throw 3 standard 7-sided dice, what is the probability that the sum of their top faces equals to 21? Assume both throws are independent to each other.

a.

\(\frac{1}{273}\)

b.

\(\frac{2}{235}\)

c.

\(\frac{1}{65}\)

d.

\(\frac{2}{9}\)

Discuss
Answer: (a).\(\frac{1}{273}\)
Q24.
A box consists of 5 yellow, 12 red and 8 blue balls. If 5 balls are drawn from this box one after the other without replacement, find the probability that the 5 balls are all yellow balls.

a.

\(\frac{5}{144}\)

b.

\(\frac{6}{321}\)

c.

\(\frac{4}{67}\)

d.

\(\frac{1}{231}\)

Discuss
Answer: (a).\(\frac{5}{144}\)
Q25.
Suppose, R is a random real number between 5 and 9. What is the probability R is closer to 5 than it is to 6?

a.

12.5%

b.

18%

c.

73%

d.

39.8%

Discuss
Answer: (a).12.5%
Q26.
A ball is thrown at a circular bin such that it will land randomly over the area of the bin. Find the probability that it lands closer to the center than to the edge?

a.

51%

b.

25%

c.

72%

d.

34%

Discuss
Answer: (b).25%
Q27.
A programmer has a 95% chance of finding a bug every time she compiles his code, and it takes her three hours to rewrite the code every time she discovers a bug. Find the probability that she will finish her program by the end of her workday. (Assume that a workday is 9 hours)

a.

76%

b.

44%

c.

37%

d.

28%

Discuss
Answer: (d).28%
Q28.
A football player has a 45% chance of getting a hit on any given pitch. What is the probability that the player earns a hit ignoring the balls before he strikes out (that requires four strikes)?

a.

0.36

b.

0.95

c.

0.67

d.

0.59

Discuss
Answer: (b).0.95
Q29.
What is variance of a geometric distribution having parameter p=0.72?

a.

54%

b.

76%

c.

13%

d.

69%

Discuss
Answer: (a).54%
Q30.
The probability that it rains tomorrow is 0.72. Find the probability that it does not rain tomorrow?

a.

65%

b.

43%

c.

28%

d.

32%

Discuss
Answer: (c).28%
Page 3 of 10

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