MCQ in English Answers for CBSE Maths 12 Science Probability

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:

Assume that the chances of a patient having a heart attack are 40%. Assume that a meditation and yoga course reduces the risk of heart attack by 30% and the prescription of certain drugs and certain restrictions reduces the risk by 25%. At a time, a patient choses only one of the two options with equal probabilities. After going through one of the two options, the patient is selected at random who is suffering from a heart attack. Find the probability that the patient followed a course of meditation and yoga. Write the value referred here.     

Answer Video in English:

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

Question 1 : A die is thrown 6 times. If 'getting an odd number' is a 'success', what is the probability of obtaining:
 atleast 5 successes?
  (View Answer Video)

Question 2 : A bag A contains 4 black and 6 red balls and bag B 7 black and 3 red balls. A die is thrown. If 1 or 2 appears on it, then bag A is chosen, otherwise bag B. It two balls are drawn at random (without replacement) from the selected bag, find the probability of one of them being red and another black.        (View Answer Video)

Question 3 :  In a group of 400 people, 160 are smokers and non-vegetarian, 100 are smokers and vegetarian and the remaining are non-smokers and vegetarian. The probabilities of getting a special chest disease are 35%, 20% and 10% respectively. A person is chosen from the group at random and is found to be suffering from the disease. What is the probability that the selected person is a smoker and non-vegetarian? What value is reflected in this question?     (View Answer Video)

Question 4 : If Question and Question then find P(E / F). (View Answer Video)

Question 5 : If P(A)=Question, P(B)=Question and Question=Question, find Question. (View Answer Video)

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

Relations and Functions

Question 1 : A function Question defined as Question is, (View Answer Video)

Question 2 : Let * be the binary operation on N given by a * b = LCM of a and b. Find 5 * 7. (View Answer Video)

Question 3 :  If f(x) = ax + b and g(x) = cx + d, then f[g(x)] – g[f(x)] is equivalent to, (View Answer Video)

Question 4 : Let * be the binary operation on N given by a * b = LCM of a and b. Find 5 * 7. (View Answer Video)

Question 5 : Let A = {1, 2, 3}. Then, number of relations containing (1, 2) and (1, 3) which are reflexive and symmetric but not transitive is, (View Answer Video)

Three Dimensional Geometry

Question 1 : Find the equation of the plane passing through the line of intersection of the plane Question and  Question which is at a unit distance from the origin. (View Answer Video)

Question 2 : If a line makes angles Question with the positive direction of co-ordinate axes, then write the value of Question (View Answer Video)

Question 3 : Write the sum of intercepts cut off by the plane  Question  on the three axes.  (View Answer Video)

Question 4 : Find the distance between the point (-1, -5, -10) and the point of intersection of line Question and plane
x - y + z = 5. (View Answer Video)

Question 5 : Find the co-ordinates of the point where the line through the points A (3, 4, 1) and B (5, 1, 6) crosses the XY-plane. (View Answer Video)

Continuity and Differentiability

Question 1 : Find Question for the function Question. (View Answer Video)

Question 2 : Find Question for the function Question. (View Answer Video)

Question 3 : Differentiate w.r.t.x the function Question, for some constant a and b. (View Answer Video)

Question 4 : Differentiate the function w.r.t.x Question. (View Answer Video)

Question 5 : Find Question for the function Question. (View Answer Video)