I look at you, you look at me I raise my right, you raise your left. What am I?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Identify the 10 differences between the two given pictures.

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

What work can one never finish?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G