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** : There are three coins. One is a two-headed coin (having head on both faces), another is a biased coin that comes up heads 75% of the times and third is also a biased coin that comes up tails 40% of the times. One of the three coins is chosen at random and tossed, and it shows heads. What is the probability that it was the two-headed coin? (View Answer Video)

**Question 2** : A die is thrown 6 times. If 'getting an odd number' is a 'success', what is the probability of obtaining:

exactly 5 successes?

(View Answer Video)

**Question 3** : There are three coins. First is a biased that comes up tails 60% of the times, second is also a biased coin that comes up heads 75% of the times and third is an unbiased coin. One of the three coins is chosen at random and tossed, it shows heads, what is the probability that it was the first coin? (View Answer Video)

**Question 4** : If E and F are two events such that,

, Find P(not E and not F). (View Answer Video)

**Question 5** : Probability of solving specific problem independently by A and B are and respectively. If both try to solve the problem, independently, then find the probability that the problem is solved.

(View Answer Video)

**Question 1** : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)

**Question 1** : Find the equation of the plane passing through the line of intersection of the planes x + y + z = 1 and 2x + 3y + 4z = 5 which is perpendicular to the plane x - y + z = 0. Also, find the distance of the plane obtained above from the origin. (View Answer Video)

**Question 2** : Find the distance between the point (-1, -5, -10) and the point of intersection of line and plane

x - y + z = 5. (View Answer Video)

**Question 3** : Find the co-ordinates of the point where the line through the points (3, -4, -5) and (2, -3, 1) crosses the plane

2x + y + z = 7. (View Answer Video)

**Question 4** : A line passes through the point with position vector and makes angles and with x, y and z-axis respectively. Find the equation of the line in the Cartesian form. (View Answer Video)

**Question 5** : Find the vector and cartesian forms of the equation of the plane passing through the point (1, 2, -4) and parallel to the lines and Also, find the distance of the point (9, -8, -10) from the plane thus obtained. (View Answer Video)

**Question 1** : Find the adjoint of the matrix . (View Answer Video)

**Question 2** : Find the area of the triangle with vertices at the points (2, 7), (1, 1), (10, 8). (View Answer Video)

**Question 3** : Evaluate the determinant: . (View Answer Video)

**Question 4** : The solution of the following system of equation is 2x + 3y = 5, 5x – 2y = 3. (View Answer Video)

**Question 5** : Let A be the non- singular square matrix of order , then |adj A| is equal to, (View Answer Video)