[Updated] Goldman Sachs Aptitude Test Questions and Answers
Practice List of TCS Digital Coding Questions !!!
Take 50+ FREE!! Online Data Interpretation Mock test to crack any Exams.

# Probability Questions

Home > Quantitative Aptitude > Probability > General Questions
NA
SHSTTON
4
Solv. Corr.
17
Solv. In. Corr.
21
Attempted
0 M:0 S
Avg. Time

61 / 72

Choose the correct option.

Out of 40 consecutive integers, two are chosen at random. Find the probability that their sum is odd?

A21/40

B19/39

C21/39

D20/39

Explanation:

Solution: To get the sum of 2 integers as odd one must be even and the other one must be odd.

In 40 consecutive integers, 20 are even and 20 are odd.

Hence.. (20C1*20C1)/40C2= 20/39

20C1= TO SELECT ONE ODD NUMBER FROM 20 NUMBERS.

20C1= TO SELECT ONE EVEN NUMBER FROM 20 NUMBERS.

40C2= TO SELECT TWO RANDOM NUMBERS FROM 40 NUMBERS.

Workspace

NA
SHSTTON
8
Solv. Corr.
13
Solv. In. Corr.
21
Attempted
0 M:0 S
Avg. Time

62 / 72

Choose the correct option.

An unbiased cubic die is thrown.What is the probabiltiy of getting a multiple of 3 or 4?

A1/9

B1/12

C1/2

D3/4

Explanation:

Solution: Total numbers in a die=6

Probability of getting a (multiple of 3) = 2/6 = 1/3

Probability of getting a (multiple of 4) = 1/6

Probability of getting a (multiple of 3 or 4) = 1/3 1/6 = 1/2

Workspace

NA
SHSTTON
12
Solv. Corr.
9
Solv. In. Corr.
21
Attempted
0 M:0 S
Avg. Time

63 / 72

Choose the correct option.

When 4 dice are thrown, what is the probability that the same number appears on each of them?

A1/36

B1/18

C1/216

D1/5

Explanation:

When 4 dice are thrown simultaneously, then the total number of possible outcomes is 64 = 1296.

The chances that all the dice show same number (1,1,1,1), (2,2,2,2), (3,3,3,3), (4,4,4,4), (5,5,5,5), (6,6,6,6)} is 6.

Hence, the required Probability = Event/ Sample space = 6/64 = 1/63 =
1/216.

Workspace

NA
SHSTTON
11
Solv. Corr.
12
Solv. In. Corr.
23
Attempted
0 M:0 S
Avg. Time

64 / 72

Choose the correct option.

3 dice are rolled. what is the probability of getting sum as 13?

A21/216

B1/216

C15/216

D1/36

Explanation:

(6,6,1)=3 ways
(6,5,2)=6 ways
(5,5,3)=3 ways
(4,4,5)=3 ways
(6,4,3)=6 ways

Hence total ways = 21
So, probability = 21/(6*6*6) = 21/216

Workspace

NA
SHSTTON
8
Solv. Corr.
13
Solv. In. Corr.
21
Attempted
0 M:0 S
Avg. Time

65 / 72

Choose the correct option.

Two cards are drawn at random from an ordinary pack of cards . Find the probability that they will consist of a king

A1/52

B1/1326

C1/221

DNone of these

Explanation:

Sample space is 50C2 which is equal to 1326. Events of getting 2 kings out of 4 is 4C2 which is equals to 6. So probability of getting two kings is 6/1326 = 1/221.

Workspace

NA
SHSTTON
8
Solv. Corr.
12
Solv. In. Corr.
20
Attempted
0 M:0 S
Avg. Time

66 / 72

Choose the correct option.

A man can hit a target once in 3 shots. If he fires 3 shots in succession, find the probability that he will hit his target.

A2/9

B19/27

C5/9

D1/27

Explanation:

Probability of hitting the target= (1- probability of not hitting the target)
if he hits once every 3 balls,
probability of hitting = 1/3,
So, probability of not hitting=2/3
probability of not hitting the target all three times= (2/3)* (2/3)* (2/3)
Probability of hitting target = 1 -(2/3)^3 = 19/27

Workspace

NA
SHSTTON
24
Solv. Corr.
16
Solv. In. Corr.
40
Attempted
0 M:0 S
Avg. Time

67 / 72

Choose the correct option.

Thangam and Pandiyamma go for an interview for two vacancies. The probability for the selection of Thangam is 1/3 and whereas the probability for the selection of Pandiyamma is 1/5. What is the probability that none of them are selected?

A3/5

B7/12

C8/15

D1/5

Explanation:

Probability of thangam being selected = 1/3
Probability of thangam not being selected = (1-1/3) = 2/3
Probability of pandiyamma being selected = 1/5
Probability of pandiyamma not being selected = (1-1/5) = 4/5

Probability that both are not selected = 2/3 * 4/5 = 8/15

Workspace

NA
SHSTTON
11
Solv. Corr.
21
Solv. In. Corr.
32
Attempted
0 M:0 S
Avg. Time

68 / 72

Choose the correct option.

100 students appeared for two different examinations 60 passed the first, 50 the second and 30 both the examinations. Find the probability that a student selected at random failed in both the examination

A5/6

B1/5

C1/7

D5/7

Explanation:

60+50-30=80
100-80=20
20/100=1/5.

Workspace

NA
SHSTTON
24
Solv. Corr.
17
Solv. In. Corr.
41
Attempted
0 M:0 S
Avg. Time

69 / 72

Choose the correct option.

A bag contains 8 white balls, and 3 blue balls. Another bag contains 7 white, and 4 blue balls. What is the probability of getting blue ball?

A3/7

B7/22

C7/25

D7/15

Explanation:

First we have to select a bag and then we will draw a ball. Probability of selection of both bags is equal =1/2
Now probability of blue ball taken from first bag = ( 1/2) x (3/11) and probability of blue ball taken from second bag = (1/2) x (4/11) So probability of blue ball = ( 1/2) x (3/11) + (1/2) x (4/11) = 7/22

Workspace

NA
SHSTTON
18
Solv. Corr.
23
Solv. In. Corr.
41
Attempted
0 M:0 S
Avg. Time

70 / 72

Choose the correct option.

In a 3*3 square grid comprising 9 tiles each tile can be painted in red or blue color. When the tile is rotated by 180 degree, there is no difference which can be spotted. How many such possibilities are there?

A16

B32

C64

D256

Explanation:

Grid has to be rotated at 180 degrees. hence,
11=33

12=32
13=31
21=23
22=22
31=13
32=12
33=11
cell 11-33 can be altered in 2 ways (as thr are 2 colours)
cell 12-32 can be altered in 2 ways cell 13-31 can be altered in 2 ways cell 21-23 can be altered in 2 ways and , cell 22 can be altered in 2 ways.

so 2X2X2X2X2 = 32.

Workspace

## Quantitative Aptitude Probability Questions and Answers pdf

At Quantitative Aptitude topic Probability, you will get multiple online quiz difficulty wise, which will have a total of 6 quizzes, categorized as easy, medium, and moderate level. While preparing for any Probability, take all the list quiz and check your preparation level for that topic. Each quiz have 10 different question, which needs to be answered in 20 min., all the listed quiz here is free, however, you will get only one chance for each quiz to attempt(Take Quiz seriously), so it is always recommended to take one quiz in each section before you start solving Probability MCQs practice question, and one after solving all the question of the respective level, you can refer back your Probability quiz result any time or you can download it as pdf for reference.

## Quantitative Aptitude Probability Customize Online Mock Test

This is own type of mock test, where At this Quantitative Aptitude Probability MCQs mock test section, you will able to attempt only the questions related to Probability, in that question will be a different level, important, and all the questions will be part of some of the mock tests across Q4interview FREE Mock test. You need to choose the topic as Probability, and click on Double click to generate your customize mock test. While attempting the mock test you need to choose any of the one options out of given option. It is recommended to go through the direction given along with each question, as these questions will be randomly and so that same direction will not be applicable across the entire test. Once you submit your mock test, the result will be generated for Probability Customize mock test, where your performance point points will be highlighted. Q4interview analysis every single point which helps you to improve your topic understanding and help you to know your type of mistakes and way to improve Probability questions, by providing the same type of practice questions from practice exercise. The best part of this Probability, all these mock tests listed here are free and you can take as Many time, as many you want. When you continue to give Probability Customize Online Mock Test here regularly, then you will understand how much you have developed your accuracy on a topic, after that you will be able to decide how much attention you need to focus on. Your continued practice will increase your confidence, speed and thinking ability intensely, the Probability Customize topic on which you will practice more will beneficial for you in future during campus placement.

## Quantitative Aptitude Probability Quiz Online Test

The details of the Quantitative Aptitude Probability quiz are as follows. There are 10 questions for you. You have to answer them in 20 minutes. Within 20 minutes you have to see the errors in the sentences given as a question. Four options are also given to you, and you have to choose your opinion. You must be confident in your answer that the choices are difficult. Therefore, below we provide you with some information about Quantitative Aptitude Probability that you see and keep them in mind while answering questions.

## Quantitative Aptitude Probability MCQs Practice Questions with Answer

On this Probability section of page you will find the easiest quickest ways to solve a question, formulas, shortcuts and tips and tricks to solve various easiest methods to solve Probability Question Quickly. It contains all the Quantitative Aptitude topic Probability questions which are common in any of the preliminary exams of any company. The solution is provided along with the questions. The practice of these questions is a must as they are easy as well as scoring and asked in all the exams They will confirm the selection if all the questions attempted wisely with little practice. It is recommanded to Take Mock test based on Quantitative Aptitude topic and Probability topic based quiz.

## Quantitative Aptitude Probability solved examples question

You can get here fully solved Probability examples with a detailed answer and description. You can solve Probability problems with solutions, the questions by companies wise by filtering the questions, additionally, you can check what type of questions are being asked in IT companies Written Round from Probability. Probability became one of the most important sections in the entire competitive exams, Companies Campus, and entrance online test. Go through Probability Examples, Probability sample questions. You can Evaluate your level of preparation in Probability by Taking the Q4Interivew Probability Online Mock Test based on most important questions. All the Probability practice questions given here along with answers and explanations are absolutely free, you can take any number of time any mock Test.

## Why Quantitative Aptitude Probability?

In this practice section, you can practice Quantitative Aptitude Questions based on "Probability" and improve your skills in order to face the interview, competitive examination, IT companies Written exam, and various other entrance tests (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

## Where can I get Quantitative Aptitude Probability questions and answers with explanation?

Q4Interview provides you lots of fully solved Quantitative Aptitude (Probability) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. You can download Quantitative Aptitude Probability quiz questions with answers as PDF files and eBooks.

## Where can I get Quantitative Aptitude Probability Interview Questions and Answers (objective type, multiple-choice, quiz, solved examples)?

Here you can find objective type Quantitative Aptitude Probability questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.