There are 10 questions, each question is either True or False. Number of different sequences of incorrect answer is also equal to (I) Number of ways in which a normal coin tossed 10 times would fall in a definite order Heads and Tails are present.

There are 10 true-false questions in an examination. The number of ways in which these questions can be answered is

There are 10 true-false questions. The number of ways in which they can be answered is

In a test paper there are 10 questions . Number of ways in which 6 questions to be answered is

In a test paper there are 10 questions . Number of ways in which 6 questions to be answered is

There are 10 true or false questions in an examination. Number of ways of answering these 10 questions which are marked either T or F is

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

A question paper has 20 questions, the answer to each of which is either true or false. A student scores 3 marks for every correct answer and loses 2 marks for every incorrect answer. If a student scores 25 marks, find the number of questions he answered correctly and the questions he answered incorrectly.

There are 10 true-false statements in a question paper.How many sequences of answers are possible in which exactly three are correct?

A test paper consists of 10 questions and each question has 4 choices . If each question is necessarily attempted then find the number of ways for answering the test paper .