MCQ in English Answers for CBSE Maths 12 Science Probability

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

Question 1 : Evaluate , if 2P(A)=P(B)= and =. (View Answer Video)

Question 2 : A bag I contains 5 red and 4 white balls and a bag II contains 3 red and 3 white balls. Two balls are transferred from the bag I to the bag II and then one ball is drawn from bag II. If the ball drawn from the bag II is red, then find the probability that one red ball and one white ball are transferred from the bag I to the bag II.   (View Answer Video)

Question 3 : In a group of 30 scientists workings on an experiment, 20 never commit error in their work and are reporting results elaborately. Two scientists are selected at random from the group. Find the probability distribution of the number of selected scientists who never commit error in work and reporting. Also find the mean of the distribution. What values are described in this question?  (View Answer Video)

Question 4 : 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.      (View Answer Video)

Question 5 : 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)

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

Integrals

Question 1 : Find :  (View Answer Video)

Question 2 : Find :  (View Answer Video)

Question 3 : Write an antiderivative for the function, using the method of inspection. (View Answer Video)

Question 4 : Find the integral of the function . (View Answer Video)

Question 5 : Prove that :  (View Answer Video)

Three Dimensional Geometry

Question 1 : Find the equation of plane passing through the line of intersection of the planes and  and passing through the point (3, -2, -1). Also, find the angle between the two given planes. (View Answer Video)

Question 2 : Find the distance of the plane : 3x - 4y + 12z = 3 from the origin. (View Answer Video)

Question 3 : 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 4 : 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 5 : If the equation of a line AB is  then, find the direction cosines of a line parallel to AB. (View Answer Video)

Relations and Functions

Question 1 : Letbe defined as f(x) = 3x.  (View Answer Video)

Question 2 : Consider a binary operation * on N defined as . Choose the correct answer. (View Answer Video)

Question 3 : The number of binary operations which can be defined on the set  is, (View Answer Video)

Question 4 :  If f is the greatest integer function and g is the modulus function . Write the value of g o f(-1/3) – f o g ( -1/3 ) . (View Answer Video)

Question 5 :  If f(x) = ax + b and g(x) = cx + d, then f[g(x)] – g[f(x)] is equivalent to, (View Answer Video)