MCQ Answers for CBSE 12 Science Maths Probability in English to enable students to get Answers in a narrative video format for the specific question.
Expert Teacher provides MCQ Answers for CBSE 12 Science Maths 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:
Answer Video in English:
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Question 1 : Five bad oranges are accidently mixed with 20 good ones. If four oranges are drawn one by one successively with replacement, then find the probability distribution of number of bad oranges drawn. Hence, find the mean and variance of the distribution. (View Answer Video)
Question 2 : 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. (View Answer Video)
Question 3 : A box contains 50 bolts and 50 nuts. Half of the bolts and nuts are rusted. If two items are drawn with replacement, what is the probability that either both are rusted or both are bolts. (View Answer Video)
Question 4 : 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)
Question 5 : One card is drawn from a pack of 52 cards. Find the probability of getting a king (View Answer Video)
Question 1 : Let be defined as f(x) = 3x. Choose the correct answer. (View Answer Video)
Question 2 : The identity element for the binary operation * defined by a * b = , where a, b are the elements of a set of non-zero rational numbers, is, (View Answer Video)
Question 3 : If is a relation on N, write the range of R. (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 R be the relation in the set N given by :
R = {(a, b) : a = b - 2, b > 6}.
Choose the correct answer : (View Answer Video)
Question 1 : Let Find 3A - C. (View Answer Video)
Question 2 : If , write , where is the transpose of A? (View Answer Video)
Question 3 : Let Find BA. (View Answer Video)
Question 4 : Find the value of X, if and . (View Answer Video)
Question 5 : Find the inverse of the matrix, . (View Answer Video)
Question 1 : Evaluate : (View Answer Video)
Question 2 : Evaluate : (View Answer Video)
Question 3 : Evaluate : (View Answer Video)
Question 4 : Find the integral of the function . (View Answer Video)
Question 5 : Evaluate : (View Answer Video)