A bag contains 5 balls of unknown colour...

A bag contains 5 balls of unknown colours. There are equal chances that 0, 1, 2, 3, 4 or 5 balls out of these five are red. A ball is taken out of the bag at random and found to be red. Then probability that it is the only red ball in the bag is

`1/6`

`1/5`

`1/30`

`1/15`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

PROBABILITY
MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|239 Videos
CIRCLE AND CONICS
MARVEL PUBLICATION|Exercise MISCELLANEOUS MCQs|50 Videos
PROBABILITY DISTRIBUTIONS
MARVEL PUBLICATION|Exercise MCQs|51 Videos

Similar Questions

Explore conceptually related problems

A bag contains 5 balls of unknown colours. A ball is drawn at random from it and is found to be red. Then the probability that all tha balls in the bag are red, is

A bag contains 3 red, 3 white and 3 green balls. One ball is taken out of the bag at random. What is the probability that the ball drawn is

A bag contains 4 red and 6 black balls. A ball is taken out of the bag at random What is the probability of getting a black ball?

There are 5 black and 4 red balls ina bag. Two balls are drawn at random. Find the probability that both balls are red.

A bag A contains 2 white and 3 red balls and a bag B contains 4 white and 5red balls. One ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn as red.

A bag contains 4 red and 4 black balls,another bag contains 2 red and 6 black balls.One of the two bags is selected at random and a ball is drawn from the bag which is found to be red.Find the probability that the ball is drawn from the first bag.

A bag A contains 2 white and 3 red balls and a bag B contains 4 white and 5 red and balls. One ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn as red.

A bag contain 4 red and 4 black ball.another bag contain 2 red and 6 black ball.One of the two bags is selected at random and a ball is drawn from the bag which is found to be red. Find thye probability that the ball is drawn from the first bag.

MARVEL PUBLICATION-PROBABILITY-MULTIPLE CHOICE QUESTIONS

There are three boxes containing respectively 1 white 2 red and 3 blac...
Text Solution
|
If A and B are two independent events in a sample space S, then : P(A/...
Text Solution
|
A bag contains 5 balls of unknown colours. There are equal chances tha...
Text Solution
|
A letter is known to have come from either "TATANAGAR" or "CALCUTTA'' ...
Text Solution
|
Natural numbers 1, 2, 3, …, 2n are written down on 2n cards, One card ...
Text Solution
|
A random variable X is defined by X={{:("3 with probability"=1/3),("...
Text Solution
|
A random variate X takes the values 0, 1, 2, 3 and its mean is 1.3. If...
Text Solution
|
. Two dice are thrown together. Find the probability of the same numbe...
Text Solution
|
If 2 dice are thrown, then probability that first die shows an even nu...
Text Solution
|
If 2 dice are thrown, then probability that product of the numbers on ...
Text Solution
|
If 6 dice are thrown, then probability that all show different numbers...
Text Solution
|
If 2 cards are drawn from a pack of 52, then probability that they are...
Text Solution
|
Three horses H(1), H(2) and H(3) are in a race which i s won by one o...
Text Solution
|
If 1 ticket is drawn from 50 tickets, numbered from 1 to 50 then proba...
Text Solution
|
If 1 pen is selected from a batch of 500 pens of which 50 are defectiv...
Text Solution
|
If A, B, C are pair-wise mutually exclusive, and exhaustive, events of...
Text Solution
|
If A, B, C are independent events such that P(Acap B) = 1/2, P(Bcap C)...
Text Solution
|
If P(A) = 0.8, P(B) = 0.6 and P(A cap B) = 0.5," then " P (B'//A')=
Text Solution
|
A ticket is drawn from 20 tickets, numbered from 1 to 20, and kept asi...
Text Solution
|
Probability of throwing 15 in one throw with 3 dice is
Text Solution
|