Logic Puzzles

Puzzles that can only be solved by thinking logically.

Out for a walk

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

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Average: 8 (1 vote)
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Animal riddle

In reply to an inquiry about the animals on his farm, the farmer says: "I only ever keep sheep, goats, and horses. In fact, at the moment they are all sheep bar three, all goats bar four, and all horses bar five." How many does he have of each animal?

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Average: 5.7 (3 votes)

The water level in a reservoir

The water level in a reservoir is low, but doubles every day. It takes 60 days to fill the reservoir. How long does it take for the reservoir to become half full?

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Average: 8 (2 votes)
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Two boxers are in a match

Two boxers are in a match scheduled for 12 rounds. (Pure boxing only. There are no kicking or takedowns). One of the boxers gets knocked out after only six rounds, yet no man throws a punch. How is this possible?

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Average: 7 (2 votes)
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A man stands on one side of a river

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

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Average: 8 (1 vote)
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A man looks at a painting

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

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Average: 8 (1 vote)
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A girl has as many brothers as sisters

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in total?

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Average: 8 (1 vote)

Apples

If there are three apples and you take away two, how many apples do you have?

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Average: 8 (1 vote)
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Three doctors

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

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Average: 8 (1 vote)
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Mary has four daughters

Mary has four daughters, and each of her daughters has a brother. How many children does Mary have?

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Average: 8 (1 vote)