Question

how can you measure 1 litre of juice out of a barrel if all you have available are the 3 litre and the 5 litre pitcher​

Answer 1

First pour the juice from the 5 l pitcher two times. we get 5 * 2 = 10 litres

Now take the 3 litre pitcher and take the juice out from where u poured 10 litre juice three times. by this, we can take out 3 * 3 = 9 litres

And in the end, we'll be left with 10 - 9 = 1 litre juice