#### Solution 1 :

1. First fill 3Lt bottle completely and pour 3 litres into 5Lt bottle.

2. Again fill 3Lt bottle completely. now pour 2 litres into 5Lt bottle until it becomes full.

3. Now empty 5Lt bottle.

4. Pour remaining 1 litre in 3Lt bottle into 5Lt bottle.

5. Now again fill 3Lt bottle completely and pour 3 litres into 5Lt bottle.

6. Now you have 4 litres in 5Lt bottle. That’s it.

#### Solution 2 :

1. First fill 5Lt bottle completely and pour 3 litres into 3Lt bottle.

2. Empty 3Lt bottle.

3. Pour remaining 2 litres in 5Lt bottle into 3Lt bottle.

4. Again fill 5Lt bottle completely and pour 1 litre into 3 Lt bottle until it becomes full.

5. Now you have 4 litres in 5Lt bottle. That’s it.