What weighs more, a kilogram of lead or a kilogram of feathers?

A butcher goes to the market with $100 cash. He has to buy exactly 100 animals. There are calves, geese and chickens for sale. A calf costs $15, a goose is $1 and a chicken costs $0.25. He has to buy at least one of each animal and has to spend all his money. What does the butcher buy?

A clock strikes '6' in 5 seconds. How long does it take to strike '12'?

A father is four times as old as his son. In 20 years he will be twice as old as his son. How old are father and son now?

A frog is at the bottom of a 30m well. Each day he summons enough energy for one 3m leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips back 2m. How many days does it take him to escape from the well?

At a family reunion were the following people: one grandfather, one grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-inlaw, one mother-in-law, and one daughter-in-law. But not as many people attended as it sounds. How many were there, and who were they?

Chopper charges $6 to cut a wooden log into 2 pieces. How much will Chopper charge to cut a log into 4 pieces?

Dakin is standing behind Jan, and Jan is standing behind Dakin. How is this possible?

David is older than Dean. Susan is younger than David, but older than Jane. Tom is younger than Jane, but older than Dean. Jane is older than Dean but younger than Susan. Tom is not the youngest. Susan is not the oldest. Tom is younger than Susan and David. Who is the youngest?

How can you double your money?

How can you make seven even?

How do you file a nail?