Probability MCQ CBSE Maths 12 Science Answers in English to enable students to get Answers in a narrative video format for the specific question.
Expert Teacher provides Probability MCQ CBSE Maths 12 Science Answers 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.
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Question 1 : A girl throws a die. If she gets a 5 or 6, she tosses a coin three times and notes the number of heads. If she gets 1, 2, 3 or 4, she tosses a coin two times and notes the number of heads obtained. If she obtained exactly two heads, what is the probability that she threw 1, 2, 3, or 4 with the die? (View Answer Video)
Question 2 : An urn contains 3 white and 6 red balls. Four balls are drawn one by one with replacement from the urn. Find the probability distribution of the number of red balls drawn. Also, find mean and variance of distribution. (View Answer Video)
Question 3 : A bag contain 2 red, 6 black and 8 green balls. A ball is drawn at random from the bag. Find the probability of black balls:
(View Answer Video)
Question 4 : 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 5 : Consider the experiment of tossing a coin. If the coin shows head, toss is done again, but if it shows tail, then throw a die. Find the conditional probability of the events that ' the die shows a number greater than 4', given that ' there is atleast one tail'. (View Answer Video)
Question 1 : Write a unit vector in the direction of the sum of vectors and (View Answer Video)
Question 2 : Find a vector in the direction of vector which has magnitude 21 units. (View Answer Video)
Question 3 : Find the angle between two vectors a and b with magnitudes and 2 respectively, having (View Answer Video)
Question 4 : Find |x|, if for a unit vector a,(x - a).(x + a) = 12. (View Answer Video)
Question 5 : Find a vector in the direction of that has magnitude 7 units. (View Answer Video)
Question 1 : Which of the following is correct? (View Answer Video)
Question 2 : Evaluate . (View Answer Video)
Question 3 : If x, y, z are non-zero real numbers, then the inverse of matrix is, (View Answer Video)
Question 4 : If find |A|. (View Answer Video)
Question 5 : The following system of equations has x + 3y + 3z = 2, x + 4y + 3z = 1, x + 3y + 4z = 2,
(View Answer Video)
Question 1 : If m and n are the order and degree, respectively of the differential equation then write value of m+n. (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 : Find the particular solution of the differential equation given that where x = 1. (View Answer Video)
Question 4 : Solve the differential equation given that y = 1 when x = 1. (View Answer Video)
Question 5 : Solve the differential equation (View Answer Video)