If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

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

What month of the year has 28 days?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Move three sticks of the spiral below to form a square.

How many triangles are there on the puzzle below?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?