A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Can you move 2 matchsticks to form four equal sized squares.

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?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Can you solve the below tricky visual equation?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

A man dies of old age on his 25 birthday. How is this possible?

Can you find the company name in the pictogram below?