Permutation-Combination
Aptitude

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Q.

There are $12$ yes or no questions. How many ways can these be answered?

 A.

$4096$

 B.

$2048$

 C.

$1024$

 D.

$144$

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Solution:
Option(A) is correct

Each of the questions can be answered in $2$ ways (yes or no).

Therefore, no. of ways of answering $12$ questions,

$= 2^{12}$

$= \textbf{4096 ways.}$


(1) Comment(s)


Shaswat Khamari
 ()

I agree.