A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

How many times can you subtract the number 5 from 25?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

Why do you find that most of the buildings are deprived of the 13th floor?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?