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- ⏳ The Sand Wizard’s Dilemma
⏳ The Sand Wizard’s Dilemma
Challenge your logic with this tricky riddle: how can you measure exactly 15 minutes using only a 7-minute and an 11-minute hourglass? A wizard’s puzzle that will test your timing and problem-solving skills.
Before clocks, people used sand, water, and even burning ropes to keep time. Also, did you know the word hourglass comes from the 14th century, when sailors used them to keep time at sea? 🌊⚓ They were way more reliable than sundials — because, well, clouds and storms don’t exactly care about your schedule.
A wizard owns two identical hourglasses: one measures 7 minutes, the other measures 11 minutes. The wizard needs to brew a potion that must be stirred for exactly 15 minutes — no more, no less — or it explodes dramatically (bad for carpets).
You can flip the hourglasses as many times as you like, but you can only keep track of time using these two.
How can the wizard measure exactly 15 minutes?
Did you try counting 7 + 11 and panic when it overshot? Or maybe you spotted the trick? This one’s all about flipping at the right moment — not just once, but with precision. The solution is a surprisingly neat recipe of timing and clever resets.