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Permutation and Combination - Quant/Math - CAT 2016


Question 4 the day: April 10, 2003

The question for the day is from the topic Permutation and Combination.

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

(1) 1024
(2) 2048
(3) 4096
(4) 144
Correct Answer - (3)

Solution:


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

Therefore, no. of ways of answering 12 questions = 212 = 4096 ways.

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