There are 4 multiple choice questions in an examination. How many sequences of answers are possible, if each question has 2 choices?

There are 6 multiple choice questions in an examination. How many sequences of answers are possible, if the first three questions have 4 choices each and the next three he 2 each?

There are 6 multiple choice questions in an examination. How many sequence of answers are possible, if the first three questions have 4 choices each and the next three have 5 each?

There are 12 true - false questions in an examination .How many seqences of answer are possible?

There are 10 true-false questions in an examination. Then these questions can be answered in

There are 90 multiple choice questions in a test. Suppose you get two marks for every correct answer and for every question you leaver unattempted or answer wrongly, one mark is deducted from your total score of correct answers. If you get 60 marks in the test, then how may questions did you answer correctly?

Arti has to answer 30 multiple-choice questions in an assignment. She has answered 24 questions correctly. What percentage of questions has she got correct?

There are 90 multiple-choice questions in a test. Every correct answer is awarded 2 marks each and 1 mark is deducted for every incorrect answer from the total score. If a student scored 60 marks in the test, find how many questions were answered correctly by him.

There are 30 objective-type questions in an examination. For every correct answer, a student scores 5 marks and for very incorrect answer, 3 marks are deducted. If a student attempts all the questions and scores 94 marks, find how many questions he answered correctly.

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.