close

Worried about Placements?

Get on FAST TRACK COURSE

Join Now

menu

Probability

Probability - Important Points

36. Two fair ten-sided dice are rolled. What is the probability of getting a sum greater than 12?

A. 1/100

B. 1/50

C. 1/25

D. 1/20

Discuss Work Space

Answer: option c

Explanation:

The possible outcomes when two ten-sided dice are rolled range from 2 to 20. To get a sum greater than 12, the possible outcomes are 13, 14, 15, 16, 17, 18, 19, and 20. Out of the 10 * 10 = 100 possible outcomes, there are 8 with sums greater than 12. Therefore, the probability is 8/100, which simplifies to 1/25.
37. A pair of fair six-sided dice is rolled. What is the probability of getting a sum less than 7?

A. 1/3

B. 5/12

C. 1/2

D. 7/12

Discuss Work Space

Answer: option b

Explanation:

The possible outcomes when two six-sided dice are rolled range from 2 to 12. The sums less than 7 are 2, 3, 4, 5, and 6. Out of the 6 * 6 = 36 possible outcomes, there are 15 with sums less than 7. Therefore, the probability is 15/36, which simplifies to 5/12.
38. Three fair eight-sided dice are rolled. What is the probability of getting at least one 8?

A. 7/512

B. 1/512

C. 15/512

D. 57/512

Discuss Work Space

Answer: option a

Explanation:

The possible outcomes when three eight-sided dice are rolled range from 3 to 24. To get at least one 8, we can use the complement rule. The probability of not getting an 8 in a single roll is 7/8. Therefore, the probability of not getting an 8 in three rolls is (7/8)^3 = 343/512. To find the probability of getting at least one 8, we subtract this from 1: 1 - 343/512 = 169/512. Therefore, the probability of getting at least one 8 is 169/512.
39. Two fair six-sided dice are rolled. What is the probability of getting a sum of 11 or 12?

A. 1/6

B. 1/9

C. 1/12

D. 1/36

Discuss Work Space

Answer: option c

Explanation:

To get a sum of 11 or 12, there are two possible outcomes: (5, 6) and (6, 6). Out of 36 total outcomes (6 sides on each die), the probability of getting a sum of 11 or 12 is 2/36, which simplifies to 1/18 or 1/12.
40. Three fair coins are tossed simultaneously. What is the probability of getting at least two heads?

A. 1/8

B. 3/8

C. 3/16

D. 1/4

Discuss Work Space

Answer: option b

Explanation:

The possible outcomes when three coins are tossed are HHH, HHT, HTH, THH, TTH, THT, HTT, and TTT (H: Head, T: Tail). Out of these eight possible outcomes, five outcomes have at least two heads (HHH, HHT, HTH, THH, and HTH). Therefore, the probability of getting at least two heads is 5/8.

Probability Questions and Answers FAQ

Read FAQ

Why do I need to learn Probability Questions with Answers in Quantitative Aptitude?

Probability is an important topic of Quantitative Aptitude. MCQ type Questions with Answers of Probability are required to build your Quantitative Aptitude skills which is a prerequisite for your Career development.

How Probability MCQ type Questions with Answers is helpful in my Career?

The Quantitative Aptitude MCQ type Questions with Answers based on "Probability" will help you improve your skills in order to face the interviews, crack Campus recruitment tests and various other competitive examination such as CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc. with full confidence.

What is the best way to prepare for Probability Questions with Answers?

First, go through the basic concepts related to Probability. Be ready with all Important Points of Probability. Then, attempt questions. Besthai.in provides you lots of fully solved Probability MCQ type questions and answers with explanation. It will help you to grasp the whole topic Probability in the easy way.

How this online resource is helpful in my preparation for Probability Questions and Answers?

Besthai.in provides lots of fully solved MCQs of Probability. You can study all important points related to Probability. You can also take Online Test to check your preparation for Probability in Quantitative Aptitude.

Subscribe for Latest Career Trends
Subscribe Now
Use AI and ChatGPT for Career Guidance

Unlock Your Future

Join Now
Worried for Placements in 2024?

Join FAST TRACK Course

Join Now
Supercharge Your SUCCESS

Join All in One Placement Mock Tests-2024

Join Now