1. You are given two candles of equal size, which can burn 1 hour each. You have
to measure 90 minutes with these candles. (There is no scale or clock). Also u r
given a lighter.
Ans: First light up the two ends of the 1st candle. When it will burn out light up
one end of the second candle. (30+60=90)
2. Try the similar problem to measure 45 minutes.
Ans: First light-up the two ends of the 1st candle and one end of the 2nd candle.
When the 1st candle will burn out ,then light up the both ends of the 2nd candle
(15+30=45)
3. You r given a thermometer. What can u do by this without measuring the
temperature?
Ans: if u put thermometer into a tree it won’t grow anymore, will just die off
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