If you say my name, I will no longer exist. What am I?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Which alphabet is a part of our body?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

Find the hidden panda in the image below.