You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

With the help clues provided in the image, can you find the 5 digit key?

What word does this rebus represent?

meta meta
meta meta

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

What goes up but never comes down?

Where do you go to learn how to make ice cream?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Where do fish keep their money?

What is the difference between a jeweller and a jailer?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.