CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Complementary Event

A bag contain...

Question

A bag contains 4 red and 3 black balls. If 2 balls are drawn at random from the bag at random without replacement then the probability bof getting exactly one red ball is

Open in App

Solution

Dear Student,
Total balls = 4+3 = 7
Now probability of drawing exactly 1 red ball and 1 black ball = (⁴C₁ × ³C₁)/⁷C₂
= (4 × 3)/7×3
=4/7
Regards!

Suggest Corrections

thumbs-up

0

Similar questions

Q. A bag contains

5

3

3

balls are drawn at random without replacement, then the probability of getting exactly two red balls is

(a) \frac{5}{14} (b) \frac{5}{28}

(c) \frac{5}{7} (b) \frac{15}{28}

Q. Mark the correct alternative in the following question:

A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random without replacement, then the probability of getting exactly one red ball is

(a) \frac{15}{29} (b) \frac{15}{56} (c) \frac{45}{196} (d) \frac{135}{392}

Q. There are two bags

A

B

. Bag A contains

3

4

red balls whereas bag

B

4

3

red balls. Three balls are drawn at random (without replacement) from one of the bags and are found to be two white and one red. Find the probability that these were drawn from bag

B

.

Q. A bag contains 5 balls of unknown colors, two balls are drawn at random from the bag and are found to be red. The probability that the bag contains exactly 4 red balls is.

Q. A bag 'A' contains

4

6

red balls and bag 'B' contains

7

3

red balls. A die is thrown. If

1

2

appears on it, then bag 'A' is chosen, otherwise bag 'B'. If two balls are drawn at random (without replacement) from the selected bag, find the probability of one of them being red and another black.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Complementary Events

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Complementary Event

Standard X Mathematics

Join BYJU'S Learning Program

CrossIcon