What is full of holes but still holds water?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

Find the hidden tiger in the given optical illusion ?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

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.