There are 2 pieces of string. Each piece is made of a different material and they are of different lengths. Both pieces of string take exactly 1 hour to burn from one end to the other end. The speed of burning is not uniform throughout, so they can burn quickly first, then slowly at the end or in any random way. If you are given only these 2 pieces of string and a box of matches, how do you measure 45 minutes?
The solution only requires you to burn the strings. No other actions like cutting, measuring, folding etc. is involved.
The solution only requires you to burn the strings. No other actions like cutting, measuring, folding etc. is involved.
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