Brain Teasers
Three CDs
Logic-Grid
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A set of 25-year-old triplets (two boys, Donovan and Gerry, and one girl, Dusty) were talking about a British Invasion CD they all own. They thought it was weird that they each got it for a different birthday (13th, 16th, and 21st) from a different person (their mom, their dad, and a friend). They didn't think it was weird that they each had different favorites (Come Dancing, Gloria, and Winchester Cathedral), though, since they had very different personalities.
Using the clues below, can you figure out who got the CD for which birthday, from whom, and what their favorite song is?
1. The person whose favorite song is "Winchester Cathedral" did not get the CD from a parent.
2. Donovan always liked "Come Dancing" even though it made him cry the first time he heard it, on the way to DMV to get his first driver's license.
3. Dad didn't give his son the CD 12 years ago.
4. Dusty got her copy of the CD after Donovan got his.
5. The friend who got one of the triplets the CD met that triplet in college.
Using the clues below, can you figure out who got the CD for which birthday, from whom, and what their favorite song is?
1. The person whose favorite song is "Winchester Cathedral" did not get the CD from a parent.
2. Donovan always liked "Come Dancing" even though it made him cry the first time he heard it, on the way to DMV to get his first driver's license.
3. Dad didn't give his son the CD 12 years ago.
4. Dusty got her copy of the CD after Donovan got his.
5. The friend who got one of the triplets the CD met that triplet in college.
Hint
In their state, the triplets could not get a driver's license before the age of 16.The triplets all started college when they were 18.
Answer
Donovan's favorite song on the CD is "Come Dancing" and his dad gave him the CD for his 16th birthday.Dusty's favorite song on the CD is "Winchester Cathedral" and her friend gave her the CD for her 21st birthday.
Gerry's favorite song on the CD is "Gloria" and his mom gave him the CD for his 13th birthday.
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Comments
Very interesting puzzle. Got it wrong twice by making false assumptions. One of the best small ones I have seen. Think it deserves a higher rating.
Good short one.
fun great job keep em' comin' loved it
Seemed pretty easy but got it wrong.
yes it did seem easy but i got most of it rong
Extremely easy.
good one
lol 3 years later and i still got it wrong
This teaser can be formulated as a set of equations/inequalities with integer and binary variables. The scip model I used to solve it can be found at
https://gist.github.com/saska-gist/
44975f7f4338efd7d57f68958d442543
https://gist.github.com/saska-gist/
44975f7f4338efd7d57f68958d442543
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