What word is pronounced the same if you take away four of its five letters?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Using eight eights and addition only, can you make 1000?

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

Can you find out the remainder when 3^300 is divided by 5?

Why are televisions attracted to people?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91