In a certain examination paper, there are n sets of questions. For i = – McqOptions

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1.	In a certain examination paper, there are n sets of questions. For i =1,2,…….n, there are 2^(n-1) is the number of ways in which the questions are answered incorrectly. If there are 8191 incorrectly answered questions, then the value of n is:
A.	13
B.	11
C.	15
D.	10
Answer» B. 11

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In a certain examination paper, there are n sets of questions. For i =1,2,…….n, there are 2^(n-1) is the number of ways in which the questions are answered incorrectly. If there are 8191 incorrectly answered questions, then the value of n is: