Can you find out which number multiplied by itself will give the output as 12345678987654321?

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

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

What is the Surname of Barbie Doll?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

When can we add 2 to 11 and get 1 as the correct answer?