Logic Puzzles

Puzzles that can only be solved by thinking logically.

What day of the week is it?

A group of campers have been on vacation so long, that they've forgotten the day of the week. The following conversation ensues.

Darryl: What's the day? I don't think it is Thursday, Friday or Saturday.

Tracy: Well that doesn't narrow it down much. Yesterday was Sunday.

Melissa: Yesterday wasn't Sunday, tomorrow is Sunday.

Ben: The day after tomorrow is Saturday.

Adrienne: The day before yesterday was Thursday.

Susie: Tomorrow is Saturday.

David: I know that the day after tomorrow is not Friday.

If only one person's statement is true, what day of the week is it?

Answer
Score visitors
Average: 9.5 (2 votes)
Kind of riddle

A parrot

A pet shop owner had a parrot with a sign on its cage that said "Parrot repeats everything it hears." A young man bought the parrot and for two weeks he spoke to it and it didn't say a word. He returned the parrot but the shopkeeper said he never lied about the parrot. How can this be?

Answer
Tags
Score visitors
Average: 10 (1 vote)
Kind of riddle

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?

Answer
Tags
Score visitors
Average: 7.4 (5 votes)
Kind of riddle

A girl meets a lion and unicorn

A girl meets a lion and unicorn in the forest. The lion lies every Monday, Tuesday and Wednesday and the other days he speaks the truth. The unicorn lies on Thursdays, Fridays and Saturdays, and the other days of the week he speaks the truth. “Yesterday I was lying,” the lion told the girl. “So was I,” said the unicorn. What day is it?

Answer
Score visitors
Average: 9.5 (4 votes)

Burning rope

This “burning rope” problem is a classic logic puzzle. You have two ropes that each take an hour to burn, but burn at inconsistent rates. How can you measure 45 minutes? (You can light one or both ropes at one or both ends at the same time.)

Answer
Tags
Score visitors
Average: 9.3 (4 votes)

A Fox, A Goose And A Sack Of Corn

A man went on a trip with a fox, a goose and a sack of corn. He came upon a stream which he had to cross and found a tiny boat to use to cross the stream. He could only take himself and one other - the fox, the goose, or the corn - one at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How does he get all safely over the stream?

Answer
Score visitors
Average: 9 (1 vote)
Kind of riddle

A Hiker

Jordan is leaving from a small town in Wyoming and hiking through the wilderness to a post where he will spend the summer. The hike will take Jordan six days. One man can only carry enough food and water for four days. Jordan cannot take a mule or any other animal to haul his food and water, because there will be insufficient food and supplies for the animals at his destination. How can Jordan make it to his destination?

Answer
Score visitors
Average: 8 (1 vote)
Kind of riddle