Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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 is the difference between a jeweller and a jailer?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

O_er_t_o_

Complete the missing letters of the given word.

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

What does below chemistry rebus means?