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Using only a 5-litre jug and a 3-litre jug (both initially empty and without markings) and an unlimited supply of water, what is the minimu…

2016Medium DSSSB TGT Computer Science 0 replies 1 views
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Using only a 5-litre jug and a 3-litre jug (both initially empty and without markings) and an unlimited supply of water, what is the minimum number of operations (fill, empty or pour) needed to measure exactly 4 litres in one of the jugs?

  • A6
  • B5
  • C4
  • D8
Correct answer: A

Explanation

Fill 5, pour into 3 (2 left), empty 3, pour the 2 into the 3-litre jug, fill 5, pour into 3 until full - the 5-litre jug then holds exactly 4 litres after 6 operations.
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