Take 5 ltr jug water 1st then put it in 3ltr jug . left is 2 ltr.
Empty 3ltr jug now fill 3 ltr with left 2ltr water of 5ltr jug. now 3 ltr jug has 2 ltr water . take 5 ltr more water put it in 3 ltr jug .
Left in 5 ltr jug is 4 ltr water.
ans is 5 i.e. 0 in initial , 5, 3, 2, 4 atlast