A question paper had 10 questions. Each question could only be answered as True (T) or false (F). Each candidate answered all the questions. Yet, no two candidate wrote the answers in an identical sequence. How many different sequences of answers are possible?

20

40

512

1024

Correct Answer: 1024

Explanation:

Each question can be answered in 2 ways.
∴ 10 question can be answered = 2¹⁰ = 1024 ways

Question

A question paper had 10 questions. Each question could only be answered as True (T) or false (F). Each candidate answered all the questions. Yet, no two candidate wrote the answers in an identical sequence. How many different sequences of answers are possible?

Accepted Answer

Each question can be answered in 2 ways.
∴ 10 question can be answered = 2¹⁰ = 1024 ways