There are 6 multiple choice questions in a paper each having 4 options of which only one is correct. In how many ways a person can solve exactly four correct, if he attempted all 6 questions.

In an examination there are 4 multiple choice questions and each question has four choices of which only one is correct. Number of ways in which a student fails to get all the answers correct, if he had attempted all the questions is

The consists of 6 multiple choice questions, each having 4 alternative answers of wihc only one is correct. The number of ways, in which a canditate answers all six questions such that exactly four of the answers are correct, is _______.

There are three section A,B, C in a paper each section having 5 questions . In how many ways a student can solve exactly 5 questions taken at least one question from each section.

In an entrance test there are multiple choice questions. There are four possible answers to each equation, of which one is correct. The probability that a student knows the answer to a question is 9//10 . If he gets the correct answer to a question, then the probability that the was guessing 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 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 examinations there are multiple choice question. There are five possible answers to each question of which one is correct. The probability that a student knows the answer to a question is 80%. IF he gets the correct answer to the question, then the probability that he was guessing is

In an entrance examinations there are multiple choice question. There are five possible answers to each question of which one is correct. The probability that a student knows the answer to a question is 80%. IF he gets the correct answer to the question, then the probability that he was guessing 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.