John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

What goes up but never comes down?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

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?

What goes up but never comes down?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

10+10 and 11+11 can give you the same answer.

Explain how?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

What you cannot hold but it is yours?

Replace the question mark with the number below given a simple math problem.