There are 10 questions; each question is either true or false. Number of different sequences of incorrect answers is also equal to

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Solution

The correct option is B

Since one question can be answered in two ways either correct or false. So, all the questions can be answers in $2^{10}$ ways.

There will be only one way in which all the answers are correct.

Number of different sequences of incorrect answers = $2^{10} - 1$

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There are 10 questions; each question is either true or false. Number of different sequences of incorrect answers is also equal to

The correct option is B Since one question can be answered in two ways either correct or false. So, all the questions can be answers in 210 ways. There will be only one way in which all the answers are correct. Number of different sequences of incorrect answers = 210−1

The correct option is B

Since one question can be answered in two ways either correct or false. So, all the questions can be answers in $2^{10}$ ways.

There will be only one way in which all the answers are correct.

Number of different sequences of incorrect answers = $2^{10} - 1$