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Difficulty: 4/102024 NMTC 2024 (QII-40)

There are 10 true-false questions in an examination. These questions can be answered in ________.

Guide / Hint

Hint 1: Identify that each true-false question has exactly 2 possible answers.

Hint 2: Apply the fundamental counting principle: since the questions are independent, multiply the choices.

Hint 3: Calculate to find the total number of ways.

Solution

Step 1 (Fundamental Counting Principle): Each of the true-false questions has exactly 2 possible answers (either True or False).

Step 2 (Calculations): Since there are 10 questions and the choice of answer for each question is independent, we multiply the number of choices for each question:

Step 3 (Conclusion): There are distinct ways to answer the 10 questions.

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    2024 NMTC 2024 QII-40 - Olympiad Math Olympiad Question | Leminno