puzzle:-How do you measure 45 minutes using 2 identical wires.
How do you measure forty-five minutes using two identical wires, each of which takes an hour to burn. you have matchsticks with you . The wires burn non-uniformly. So, for example, the two halves of a wire might burn in 20 minute and 40 minutes respectively.
Answer:-
1st step :-
How do you measure forty-five minutes using two identical wires, each of which takes an hour to burn. you have matchsticks with you . The wires burn non-uniformly. So, for example, the two halves of a wire might burn in 20 minute and 40 minutes respectively.
1st step :-
Light up three out of the four ends of the two wires. Once one wire is completely burnt,
2nd step:-
light up the fourth end. At 45 minutes, both wires are burnt completely.
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