Question

There are 10 true-false questions in an examination. Then, these questions can be answered in

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

Answer 1

Answer: (C)

$\because$ Each true-false question can be answered in 2 ways.
$\therefore$ Number of ways in which 10 questions can be answered
$=2^{10}=1024$