Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

By using 'because' continuously three times, can you make an English statement ?

A charming young lady was approached by a kind looking old woman in a restaurant. The old woman said to her, 'You look exactly like my younger daughter. Sadly she passed away a couple of months back. Could you do me a favor and say 'Goodbye, mother' with a kind smile on your face when I leave?

The young lady agreed for the same and said, 'Goodbye, mother' when the old woman left. Soon after, she got the most disengaging shock of her life.

Can you guess what the shock was?

What breaks yet never falls, and what falls yet never breaks?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?