If an hourglass takes 30 minutes to empty, how many times can you flip it in 1 hour?
Category: Math · Difficulty: easy
Hint: Think about the total time available.
Answer
2
Explanation
You can flip it twice in 60 minutes, once at 30 and again at 60.
This is an easy math riddle — a good one for children and beginners. The answer is 2.
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