Permutation & Combination Answers

Permutation and Combination - Quant/Math - CAT 2007

---

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.