How much bigger is 1 1/4 button than a 5/8 button?
2 answers:
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Answer: 
Justification:
As told in the statement, n stands for the number of bits, and
is the highest number of ways n bits can be arranged in the system.
Now, Antonio wants to show that the character can collect one less key than that. So, that number is less 1, which is what the formula - 1 states.
Justification:
As told in the statement, n stands for the number of bits, and
Now, Antonio wants to show that the character can collect one less key than that. So, that number is