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

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

Can you make a fire with just a single stick?

Why do people go to bed?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

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?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Can you find the hidden animal in the picture below?

What does below Rebus say?

XLR8

The peacock is a bird that does not lay eggs. How do they get baby peacocks?