There was an aeroplane crash, every single person died, but two people survived. How is this possible?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

The host of a game show, offers the guest a choice of three doors. Behind one is a 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?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

What goes up but never comes down?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?