There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

Which number should replace the question mark?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

There was a strange boy who was born before his father. How can this be possible?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

What has 88 keys?

Can you count the number of squares in the given picture?

Which city is three-fifths chick two third cat and 50% goat?