What happened when the wheel was invented?

How do you go from 98 to 720 using just one letter?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Where do fish keep their money?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

In a fruit store, there was a unique weighing machine that was made to weigh only cherries and strawberries as they were priced the same.

Other fruits like watermelons or mango had different machines as they were expensive.

A man successfully buys watermelons at the price of cherries. How?