Question

There are $10$ true-false questions is an examination. The number of ways in which these questions can answered is given by

• A. $240$
• B. $20$
• C. $1024$
• D. $100$

Answer 1

Answer: (C)

$1024$

There are $10$ questions with options of false/true. It means each question has two options.

Thus the number of ways that these questions can be answered $=2^{10}=1024$ ways.