12 Science CBSE Maths Answers for MCQ Probability in English

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

Expert Teacher provides 12 Science CBSE Maths Answers for MCQ 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:

A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20, 16, 18, 20, 17, 16, 19 and 20 years. One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded. What is the probability of the random variable X? Find the mean.  

Answer Video in English:

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

Similar Questions from CBSE, 12th Science, Maths, Probability

Question 1 : A bag contains 4 red and 4 black balls, another bag contains 2 red and 6 black balls. One of the two bags is selected at random and two balls are drawn at random (without replacement) from the bag which are both found to be red. Find the probability that the balls are drawn from the first bag.    (View Answer Video)

Question 2 : If Question and Question find Questionif E and F are independent events.  (View Answer Video)

Question 3 : P speaks truth in 70% of the cases and Q in 80% of the cases. In what percent of cases are they likely to agree in stating the same fact?  (View Answer Video)

Question 4 : A speaks truth in 60% of the cases, while B in 90% of cases. In what percent of cases are they likely to contradict each other in stating the same fact? In the cases of contradiction do you think, the statement B will carry more weight as he speaks truth in more number of cases than A?    (View Answer Video)

Question 5 :  If E and F are independent events, then show that Question and Questionare also independent.  (View Answer Video)

Questions from Other Chapters of CBSE, 12th Science, Maths

Application of Integrals

Question 1 : Using the method of integration find the area of the region bounded by lines:
2x + y = 4, 3x - 2y = 6 and x - 3y + 5 = 0.
  (View Answer Video)

Question 2 : Area lying in the first quadrant and bounded by the circle Question and the lines x =0 and x = 2 is (View Answer Video)

Question 3 : Find the area of the smaller part of the circle Questioncut off by the line  Question (View Answer Video)

Question 4 : A farmer has a field of shape bounded by Questionand x = 3, he wants to divide this into his two sons equally by a straight line x = c. Can you find c? What value, you find in the person ? (View Answer Video)

Question 5 : 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)

Three Dimensional Geometry

Question 1 : Find the vector equation of a plane which is at a distance of 5 units from the origin and its normal vector is Question (View Answer Video)

Question 2 : Find the distance of the point (-1, -5, -10) from the point of intersection of the line  Question  and the plane Question (View Answer Video)

Question 3 : Find the distance between the point (7, 2, 4) and the plane determined by the points A(2, 5, -3), B(-2, -3, 5) and C(5, 3, -3). (View Answer Video)

Question 4 : What is the distance of the point (p, q, r) from the x-axis ? (View Answer Video)

Question 5 : Find the distance between the point (5, 4, -6) and its image in xy-plane. (View Answer Video)

Matrices

Question 1 : If for any squareQuestion matrix A, Question then write the value of |A|. (View Answer Video)

Question 2 : IfQuestion , write the value of"x". (View Answer Video)

Question 3 : Given, Question, find the value of x. (View Answer Video)

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

Question 5 : Find the value of Y, if Question and Question (View Answer Video)