In a test of 10 multiple of choice questions of one correct answer each having 4 alternative answers, the number of ways to put ticks at random for the answer to all the questions is

In an entrance test, there are multiple choice questions. There are four possible answers to each question, of which one is correct. The probability that a student knows the answer to a question is 90%. If the gets the correct answer to a question, then find the probability that he was guessing.

In an entrance test, there are multiple choice questions. There are four possible answers to each question, of which one is correct. The probability that a student knows the answer to a question is 90%. If the gets the correct answer to a question, then find the probability that he was guessing.

In a multiple choice question, there are four alternative answers of which one or more than one is correct A candidate will get marks on the question only if he ticks the correct answer. The candidate decides to tick answers at a random. If he is allowed up to three chances to answer the question, then find the probability that he will get marks on it.

In a multiple choice question, there are four alternative answers of which one or more than one is correct A candidate will get marks on the question only if he ticks the correct answer. The candidate decides to tick answers at a random. If he is allowed up to three chances to answer the question, then find the probability that he will get marks on it.

In a multiple choice question, there are five alternative answers of which one or more than one are correct. A candidate will get marks on the question, if he ticks all the correct answers. If he decides to tick answer all random, then the least number of choices should he be allowed, so that the probability of his getting marks on the question exceeds (1)/(8) is

In an examinations there are three multiple choice questions and each questions has 4 choices. Find the number of ways in which a student can fail to get all answer correct.

A test paper has 20 multiple-choice questions. Each correct answer is awarded 3 marks but -2 marks are given for every wrong answer. No marks are awarded or deducted for questions that are not attempted. a. Sia attempts all questions. She gets only 12 questions correct. How many marks did she score in this test? b. Rajshree scores 5 marks in a test. If she answers 7 questions correctly, find the number of questions she did not answer correctly, and also the number of questions she did not attempt.

In which year were the test taker given the least time to answer all the questions?

A student has to answer 10 out of 13 questions in an examination. The number of ways in which he can answer if he must answer atleast 3 of the first five questions is 276 b. 267 c. 80 d. 1200

In a examination there are four multiple choice questions and each question has 4 choices. Number of ways in which a student can fail to get all answer correct is (i) 256 (ii) 254 (iii) 255 (iv) 63