An alien race uses base-5 counting. What does the number '100' represent in base-10?
Category: Brain · Difficulty: expert
Hint: Convert using base-5 rules.
Answer
25.
Explanation
In base-5, '100' equals 1*5^2 + 0*5^1 + 0*5^0, which equals 25 in base-10.
This is a expert brain riddle — one of the harder riddles here. The answer is 25..
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