An urn contains 5 red and 5 black balls....

An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. What is the probability that the second ball is red?

Topper's Solved these Questions

PROBABILITY
MODERN PUBLICATION|Exercise EXERCISE|543 Videos
MOCK TEST-3
MODERN PUBLICATION|Exercise EXERCISE|35 Videos
RELATIONS AND FUNCTION
MODERN PUBLICATION|Exercise EXAMPLE|212 Videos

Similar Questions

Explore conceptually related problems

A bag contains 3 white and 5 black balls. A ball is drawn at random. Find the chance that it is a black ball.

A urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. What is the probability that the ball drawn will be: red .

An urn contains m white and n black balls. A ball is drawn at random and is put back into the urn along with k balls of the same colour as that of the ball drawn. a ball is again drawn at random. Show that the probability of drawing a white ball now does not depend on k.

A urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. What is the probability that the ball drawn will be: white.

A urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. What is the probability that the ball drawn will be: red or black.

A urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. What is the probability that the ball drawn will be: not red.

A urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. What is the probability that the ball drawn will be: black .

A urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. What is the probability that the ball drawn will be: white or black.

An urn contains 9 red, 8 white and 4 black balls. A ball is drawn at random. What is the probability that ball drawn is white or black ?

An urn contains 7 red and 4 blue balls. Two balls are drawn at random with replacement. Find the probability of getting one red and one blue ball.

MODERN PUBLICATION-PROBABILITY-EXERCISE

The probability of obtaining an even prime number on each die, when a ...
Text Solution
|
Two events A and B will be independent, if:
Text Solution
|
An urn contains 5 red and 5 black balls. A ball is drawn at random, it...
Text Solution
|
A bag contains 4 red and 4 black balls, another bag contains 2 red and...
Text Solution
|
Of the students in a college, it is known that 60% reside in hostel an...
Text Solution
|
In answering a question in a multiple choice test a student either kno...
Text Solution
|
A laboratory blood test is 99% effective in detecting a certain diseas...
Text Solution
|
A coin is tossed 5 times . What is the probability of getting 5 hea...
Text Solution
|
A die is tossed once. The probability of getting an odd number is :
Text Solution
|
A factory has two machines A and B. Past record shows that machine A p...
Text Solution
|
Two cars are 351 km apart. They start at the same time and drive towa...
Text Solution
|
A coin is tossed once, what is the probability that one head occurs?
Text Solution
|
A manufacturer has three machine operators A, B and C. The first opera...
Text Solution
|
A card from a pack of 52 cards is lost. From the remaining cards of th...
Text Solution
|
Probability that A speaks truth is 4/5. A coin is tossed. A reports t...
Text Solution
|
If A and B are two events such that AsubB and P(B) ne 0, then which of...
Text Solution
|
State which of the following are not the probability distributions of ...
Text Solution
|
State which of the following are not the probability distributions of ...
Text Solution
|
State which of the following are not the probability distributions of ...
Text Solution
|
State which of the following are not the probability distributions of ...
Text Solution
|