No.  Problems & Solutions [Click Hide/Show to display the solutions below the question] 

01. 
If a ball is drawn at random, from a bag containing 5 white and 3 black balls, then write the number of successes and failures for the ball to be a black one.

Solution  
In the experiment of drawing a ball from a bag containing 5 white and 3 black balls i.e 8 balls
Let "A" be the event of the ball drawn being black For Event "A"
Number of successes for the event of drawing a black ball
Number of failures for the event of drawing a black ball

No.  Problems & Solutions [Click the links to display the solutions in a separate page]  

02. 
If a ball is drawn at random from a bag containing 12 black and 15 white balls, what is the probability and odds that it is a) Black b) White?
Solution


03. 
A bag contains 3 red balls, 4 white balls and 7 black balls the probability of drawing a red or a black ball is
Solution


04. 
A ball is drawn at random from a box containing 16 red balls, 24 white balls and 15 blue balls. Determine the probability that it is
(i) Not red, (ii) Red or white, (iii) Neither Red Nor Blue
Solution


05. 
Define the Event and identify the number of favourable choices in the following cases which relate to the experiment of drawing a ball
Solution

No.  Problems for Practice 

01. 
A ball is drawn at random from an urn containing 15 green, 25 black, 16 white balls. . The probability that it is either a black ball or a green ball is

02. 
A box contains 150 bolts of which 50 are defective. Find the probability that the bolt chosen at random from the box is not defective.

03. 
An 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 (i) Red or Black, (ii) White or Black, (iii) Not red, (iv) Neither Red nor Black

Author Credit : The Edifier 