I shave every day, but my beard stays the same. What am I?

Can you spot the hidden girl in the picture below?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

How many times can you subtract the number two from the number fifty?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30