At the local model boat club, four friends were talking about their boats.
Alex didn't have a yellow boat. Billie didn't have a red boat, but did have a green one. One of the friends had a yellow boat, and a blue boat. Another friend had a green boat, and a blue boat. Charlie had a yellow boat. Drew had a blue boat, but didn't have a green one.
There were a total of eight boats, two in each colour: red, green, blue, and yellow.
Each friend owned two boats, and no friend had two boats of the same colour.
Answer
Alex Red + Green
Billie Green + Blue
Charlie Yellow + Red
Drew Blue + Yellow
Reasoning
By (3), Yellow and Blue went together (Combination1: Yellow + Blue).
By (4), Green and Blue went together (Combination2: Green + Blue).
By (2), Billie had Green. By (5), Charlie had Yellow. By (6), Drew had Blue. Giving:
Alex
Billie Green
Charlie Yellow
Drew Blue
By (6), Drew had Blue, but not Green. This can't have been (Combination2: Green + Blue), so must have been (Combination1: Yellow + Blue):
Alex
Billie Green
Charlie Yellow
Drew Blue + Yellow
By (2), Billie didn't have Red, so Alex and Charlie must have had Red:
Alex Red
Billie Green
Charlie Yellow + Red
Drew Blue + Yellow
Which means that Billie had (Combination2: Green + Blue), and Alex had Green:
Alex Red + Green
Billie Green + Blue
Charlie Yellow + Red
Drew Blue + Yellow
?
Puzzle 2
Yesterday I was asked to buy some stamps.
In the land of BrainBashers, stamps are available in denominations of 3p, 9p, 11p, 17p, and 21p (just these five different values).
For three denominations of stamp I was asked to buy eight of each, and for the other two denominations I was asked to buy nine of each.
Unfortunately, I forgot which I was supposed to buy eight of, and which to buy nine of!!
Luckily I had been given the exact money required to buy the stamps, £5.00, so the shopkeeper was able to work out the stamps I needed.
