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

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

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

Can you decipher the following common phrase?

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

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

What do you get if you add 2 to 100 four times?