Can you find the thief by just looking at the picture below?

How many words can a pen with half refill write?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

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

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Find the value of "?" in the ball picture Riddle below:

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?