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- Burning ropes as timers 5 answers
You have got two ropes of same mass, same material, same thickness and same length but mass is not uniformly distributed over the length. Both of the ropes burn in 1 hour but you cannot cut them in half and expect the two halves to burn in 30 minutes because of non-uniform distribution.
How would you measure 45 minutes using these two ropes?
What is the probability that at any given instant (second), the sum of the length burnt by both ropes will be equal to the original length of either rope?