CoCubes Probability Question and Answers Quiz-1

Question 1

Time: 00:00:00
A bag contains 3 red,5yellow and 4 green balls.3 balls are drawn randomly, what is the probability that the ball drawn contains no yellow ball?

9/44

9/44

37/44

37/44

43/44

43/44

7/44

7/44

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 2

Time: 00:00:00
There are 4 boys and 3 girls. they sit in a row randomly. What is the probability that all girls are together?

1/14

1/14

2/14

2/14

5/14

5/14

3/14

3/14

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 3

Time: 00:00:00
A positive integer is selected at random and is divided by 7,what is the probability that the remainder is 1?

3/7

3/7

4/7

4/7

1/7

1/7

2/7

2/7

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 4

Time: 00:00:00
3 individuals Sachin, Dhoni and Ashwin want to become the new coach of team india. The probablities of them becoming the new coach are 0.5, 0.3 and 0.2 respectively. If Sachin is appointed then probability of Virat appointed as a captain will be 0.7 and corresponding probablity if Dhoni or Ashwin is appointed are 0.6 and 0.5 respectively. Find the overall probability that Virat will appointed as a captain.

0.63

0.63

0.35

0.35

0.18

0.18

0.89

0.89

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 5

Time: 00:00:00
If two fair dice are thrown simultaneously. then what is the probability that sum of the numbers appearing on the top faces of the dice is less than 4?

6/14

6/14

1/12

1/12

3/18

3/18

none

none

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 6

Time: 00:00:00
A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:

2/91

2/91

1/22

1/22

3/22

3/22

2/77

2/77

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 7

Time: 00:00:00
A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective, is:

4/19

4/19

7/19

7/19

12/19

12/19

21/95

21/95

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 8

Time: 00:00:00
In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he has offered English or Hindi ?

2/5

2/5

3/4

3/4

3/5

3/5

3/10

3/10

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 9

Time: 00:00:00
A box contains 6 red balls, 7 green balls and 5 blue balls. Each ball is of a different size. The probability that the red ball being selected is the smallest red ball, is

1/18

1/18

1/3

1/3

1/6

1/6

2/3

2/3

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

Question 10

Time: 00:00:00
If A and B are 2 independent events and P(A)=0.5 and P(B) = 0.4, find P(A/B):

0.5

0.5

0.4

0.4

0.88

0.88

None of these

None of these

Once you attempt the question then PrepInsta explanation will be displayed.

Please login to submit your explanation

Start

["0","40","60","80","100"]
["Need more practice!","Keep trying!","Not bad!","Good work!","Perfect!"]

Personalized Analytics only Availble for Logged in users

Analytics below shows your performance in various Mocks on PrepInsta

Your average Analytics for this Quiz

Rank

-

Percentile

0%

Completed

0/0

Accuracy

0%

Comments