How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

Which is the rope you never skip with?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

What is full of holes but still holds water?

What do you answer even though it never asks you questions?