Monthly Archives: June 2015

Puzzle #104: Togglers Puzzle

Another beautiful puzzle this time – one from my nephew Karan Sharma, originally seen from Khan Academy, though available at other places as well. This is a truth-liar problem. Here it goes: You are in a room with five people. … Continue reading

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Solution to Puzzle #103: Proof Without Trigonometry

A wonderful puzzle, and the solution is a beautiful one. This was a difficult one, and therefore I did not get as many answers to the puzzle. Abhinav was the first one to send a correct answer – and a … Continue reading

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