calculation puzzle - A Set of Water Jug Challenges

You've probably heard about challenges with water jugs, so why not try a few?

1. Use 3- and 5- liter jugs to get 4 liters.
   


2. Use 5- and 7- liter jugs to get 4 liters.
   


3. This one's different. How many different exact measurements can you get using only 8- and 11- liter jugs (not including 0 liters)?
   


4. Use 3- and 11- liter jugs to get 7 liters.

These numbers are made by me, so if any of these exactly match the popular ones out there (except for the first one), it is purely coincidental.

Note: accepted answer is the one that is first with all 4 correct answers.

Format to submit answer

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(example with 5- and 8- liter jugs to get 6 liters)
0-0, 0-8, 5-3, 0-3, 3-0, 3-8, 5-6

Answer

The answers are:

1. 3-0, 0-3, 3-3, 1-5, 1-0, 0-1, 3-1, 0-4.


2. 5-0, 0-5, 5-5, 3-7, 3-0, 0-3, 5-3, 1-7, 1-0, 0-1, 5-1, 0-6, 5-6, 4-7.


3. You can get 19 exact measurements (1 litre - 19 litres) not including 0 litre.



4. 3-0, 0-3, 3-3, 0-6, 3-6, 0-9, 3-9, 1-11, 1-0, 0-1, 3-1, 0-4, 3-4, 0-7.