Mathspp Blog

logic — Logical puzzles and challenges

Problem #041 – canyon crossing

It's night time and 4 friends need to cross a fragile bridge, but they only have one torch. What's the order in which they should cross?

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Problem #040 – the dozen puzzle

Three friends are given three different numbers that add up to a dozen. Can you figure out everyone's numbers?

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Problem #039 – rope timer

You have two magical ropes that you can set on fire and you need to count 45 minutes. How do you do it?

logic mathematics
Buffet of self-references

This article will twist and bend your mind a little bit, as we go over some interesting self-referential concepts and objects.

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Problem #034 – one question to happiness

Two doors, one gives you eternal happiness and the other eternal sadness. How can you pick the correct one?

logic mathematics
Problem #017 – shuffle me around

There's 100 drawers and 100 shuffled balls. Can you find the one I choose?

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Problem #016 – hamburger dilemma

I mixed up my hamburgers while cooking. Can you help me out?

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Problem #013 – circular train

Can you find out how many carriages this circular train has?

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Problem #011 – salvation of the monks

How can 2018 monks find eternal peace?

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Problem #012 – it is just a matter of time

How often do the hands of a clock overlap?

logic mathematics slice of life
Problem #010 – Alice and the Maths Hatter

How can 4 friends guess their own hat colours?

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Problem #009 – greedy pirates

How can a greedy pirate captain keep his treasure to himself?

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Problem #008 – cutting squares

Given some paper squares, can you slice them and then glue them back together to form a single square?

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