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

Expert Teacher provides MCQ Answers for CBSE Maths 12 Science Probability through Video Answers 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 Answer in a narrative video format.

** Question:**

** Answer Video in** **English****:**

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

**Question 1** : In a school, there are 1,000 students, out of which 380 are girls. Out of 380 girls, 10% of the girls scored highest in GS. What is the probability that a student chosen randomly scored highest in GS given that the chosen student is a girl? (View Answer Video)

**Question 2** : A coin is biased so that the heads is 2 times as likely to occur as tail. If the coin is tossed twice, find the probability distribution of number of tails. Hence find the mean of the distribution. (View Answer Video)

**Question 3** : If E and F be two evets such that , , find if E and F are independent events. (View Answer Video)

**Question 4** : Three persons A, B and C apply for a job of Manager in a Private company. Chance of their selection (A, B and C) are in the ratio 1:2:4. The probability that A, B, and C can introduce changes to improve profits of company are 0.8, 0.5 and 0.3 respectively, if the changes does not take place, find the probability that is due to the appointment of C. (View Answer Video)

**Question 5** : How many times must a man toss a fair coin, so that the probability of having at least one head is more than 80%. (View Answer Video)

**Question 1** : If and are two equal vectors, then write the value of (View Answer Video)

**Question 2** : Find |x|, if for a unit vector a,(x - a).(x + a) = 12. (View Answer Video)

**Question 3** : Find the sum of the vectors and (View Answer Video)

**Question 4** : Compute the magnitude of the following vectors:

(View Answer Video)

**Question 5** : Find if the vectors and are coplanar. (View Answer Video)

**Question 1** : Find the angle between the lines whose direction ratios are a, b, c and b - c, c - a, a - b. (View Answer Video)

**Question 2** : Write the equation of the straight line through the point and parallel to z-axis. (View Answer Video)

**Question 3** : Find the angle between the lines and (View Answer Video)

**Question 4** : Find the distance of the point (-1, -5, -10) from the point of intersection of the line and the plane (View Answer Video)

**Question 5** : Find the distance of the plane : 3x - 4y + 12z = 3 from the origin. (View Answer Video)

**Question 1** : Find the area of the region bounded by the parabola and y = | x |. (View Answer Video)

**Question 2** : Using integration, find the area of the region bounded by the triangle whose vertices are (-1, 2), (1, 5) and (3, 4). (View Answer Video)

**Question 3** : Using the method of integration, find the area of the triangular region whose vertices are (2, -2), (4, 3) and (1, 2). (View Answer Video)

**Question 4** : Using the method of integration, find the area of the region bounded by the lines 3x - y - 3 = 0, 2x + y - 12 = 0 and x -2y - 1 = 0. (View Answer Video)

**Question 5** : Find the area of the smaller region bounded by the ellipse and the line (View Answer Video)