Solutions for MCQ CBSE 12 Science Maths Probability in English

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:

Of the students in a college, it is known that 60% reside in hostel and 40% are day scholars (not residing in hostel). Previous year results report that 30% of all students who reside in hostel attain 'A' grade and 20% of day scholars attain 'A' grade in their annual examination. At the end of the year, one student is chosen at random from the college and he has an 'A' grade. What is the probability that the student is a hosteler?

Solution Video in English:

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

Question 1 : 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 2 : A man is known to speak the truth 3 out of 5 times. He throws a die and reports that it is 1. Find the probability that it is actually 1. (View Answer Video)

Question 3 : The probabilities of two students A and B coming to the school in time are and respectively. Assuming that the events ' A coming in time ' and
' B coming in time ' are independent. Find the probability of only one. Write of them come in time atleast one advantage of coming to school in time. (View Answer Video)

Question 4 : Compute P(A/B) if P(B) =0.5 and P(AB)=0.32. (View Answer Video)

Question 5 : A and B throw a pair of dice alternatively, till one of them gets a total of 10 and wins the game. Find their respective probabilities of winning, if A starts first. (View Answer Video)

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

Determinant

Question 1 : A system of linear equations AX = B is said to be inconsistent, if the system of equations has, (View Answer Video)

Question 2 : If find |A|. (View Answer Video)

Question 3 : The following system of equations has x + 3y + 3z = 2, x + 4y + 3z = 1, x + 3y + 4z = 2,

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Question 4 : Let , where . THhen (View Answer Video)

Question 5 : Evaluate the determinant: . (View Answer Video)

Continuity and Differentiability

Question 1 : If and , find . (View Answer Video)

Question 2 : Differentiate w.r.t.x. (View Answer Video)

Question 3 : Find the second order derivative of the function . (View Answer Video)

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

Question 5 : Differentiate the function with respect to x. (View Answer Video)

Differential Equations

Question 1 : Write the sum of the order and degree of the differential equation (View Answer Video)

Question 2 : Form the differential equation of equation y = a cos 2x + b sin 2x, where a and b are constant. (View Answer Video)

Question 3 : Write the differential equation representing the curve where a is an arbitrary constant. (View Answer Video)

Question 4 : Write the differential equation formed from the equation y = mx + c, where m and c are arbitrary constants.
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Question 5 : Write the degree of the differential equation (View Answer Video)