No.  Problems & Solutions [Click the Solution link to move to the Solution page]  

01. 
The probability of getting 2 white and 3 black balls from a bag containing 8 white and 12 black balls is
Solution


02. 
What is the probability of getting (i) 2 white balls, (ii) 2 green balls, (iii) one of each colour in draw of two balls from a box containing 3 white and 4 green balls?
Solution


03. 
Three balls are drawn at random from collection of 7 white, 12 green and 4 red balls. The probability that each is of different colour is
Solution


04. 
A bag contains 3 red, 4 white and 5 blue balls, 2 balls are drawn at random. The probability that they are of different colours is
Solution


05. 
In a bag there are ten balls of which three are red. Find the probability that in a draw of two balls (i) both will be red (ii) there will be at least one red ball.
Solution


06. 
From a bag containing 4 white and 5 black balls a man draws 3 at random. The odds against all the balls being black is
Solution


07. 
Define the Event and identify the number of favourable choices in the following cases which relate to the experiment of drawing balls
Solution

No.  Problems for Practice 

01. 
A bag contains 8 white and 4 red balls. Five balls are drawn at random. Then the probability that 2 of them are red and 3 white is

02. 
What is the probability of getting 3 white balls in a draw of 3 balls from a box containing 5 white and 4 black balls?

03. 
A bag contains 6 white, 4 red and 10 black balls. two balls are drawn at random. The probability that they will both be black is

04. 
A bag contains 2 red, 3 white and 4 black balls. 2 balls are drawn at random, the probability that they are of different colours is

05. 
Show that the odds are 7 to 3 against drawing 2 red balls from a bag containing 3 red and 2 white balls.

06. 
In a bag there are 12 balls in which 5 are red. The probability that there will be atleast one red ball in a draw of two balls is

07. 
In a bag there are 12 balls in which 5 are red. The probability that there will be atleast one red ball in a draw of two balls is

08. 
A bag containing 3 white, and 3 black and 2 blue balls. Three balls are drawn at random from the bag. Find the probability of drawing three balls of the same colour

09. 
A box contains 2 red, 3 blue and 4 black balls. Three balls are drawn from the box at random. What is the probability that two balls are of the colour and the third of different colour?

Author Credit : The Edifier 