Solutions for MCQ CBSE 12 Science Maths Probability in English to enable students to get Solutions in a narrative video format for the specific question.

Expert Teacher provides Solutions for MCQ CBSE 12 Science Maths Probability through Video Solutions in English language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Probability not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Solution in a narrative video format.

** Question:**

** Solution Video in** **English****:**

You can select video Solutions from other languages also. Please check Solutions in ( Hindi )

**Question 1** : A box contains 50 bolts and 50 nuts. Half of the bolts and nuts are rusted. If two items are drawn with replacement, what is the probability that either both are rusted or both are bolts. (View Answer Video)

**Question 2** : From a lot of 30 bulbs which includes 6 defectives, a sample of 4 bulbs is drawn at random one by one with replacement. Find the probability distribution of the number of defective bulbs. Hence find the mean of the distributions. (View Answer Video)

**Question 3** : An urn contains 3 white and 6 red balls. Four balls are drawn one by one with replacement from the urn. Find the probability distribution of the number of red balls drawn. Also, find mean and variance of distribution. (View Answer Video)

**Question 4** : In a hockey match, both teams A and B scored same number of goals up to the end of the game, so to decide the winner, the referee asked both the captains to throw a die alternately and decided that the team, whose captain gets a six first, will be declared the winner. If the captain of the team A was asked to start, find their respective probabilities of winning the match and state whether the decision of the referee was fair or not. (View Answer Video)

**Question 5** : Consider the experiment of tossing a coin. If the coin shows head, toss is done again, but if it shows tail, then throw a die. Find the conditional probability of the events that ' the die shows a number greater than 4', given that ' there is atleast one tail'. (View Answer Video)

**Question 1** : Find the value of c from the equation: . (View Answer Video)

**Question 2** : Find the value of y, from the equation: . (View Answer Video)

**Question 3** : Compute: . (View Answer Video)

**Question 4** : Let Find A - B. (View Answer Video)

**Question 5** : Using elementary transformation, find the inverse of the matrix . (View Answer Video)

**Question 1** : is equal to :

(View Answer Video)

**Question 2** : Write the principal value of (View Answer Video)

**Question 3** : Find the value of What value do you learn from it ? (View Answer Video)

**Question 4** : Write the principal value of (View Answer Video)

**Question 5** : Solve the equation for (View Answer Video)

**Question 1** : For all real values of x, the minimum value of is (View Answer Video)

**Question 2** : Find the maximum profit that a company can make if the profit function is. (View Answer Video)

**Question 3** : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is _____________. (View Answer Video)

**Question 4** : What is the maximum value of the function sin x+ cos x? (View Answer Video)

**Question 5** : A balloon, which always remains spherical on inflation, is being inflated by pumping in 900 cubic centimetres of gas per second. Find the rate at which the radius of the balloon increases when the radius is 15 cm. (View Answer Video)