Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

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?

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

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What is so fragile that saying its name breaks it?

Move three sticks of the spiral below to form a square.

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

What you cannot hold but it is yours?