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.

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

The more you take me, the more you leave me behind.
Who Am I?

What four weights can be used to balance from 1 to 30 pounds?

A man dies of old age on his 25 birthday. How is this possible?

Why Aeroplane windows are round?

What month of the year has 28 days?

Can you replace the question mark with the correct number?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?