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Puzzle 13 


What is the test to see …

… if a number is divisible by nine?

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Puzzle 14 


Tuif cumzye if n fizpye trsg go sre hbw ensl n EOG13 caet eaceyctrd phzmlr paa oe. Rvrrl btuee yegtrr hns brea poavrrgeq go RBT13 aad tue oghrr lrtgees aee lrfg ns tuel jeee. Oug, ybu mny afk, jhnt if ghr cumzye? Wrly, hbw mnnl joedf nrr vn tuif cumzye!

Puzzle Copyright © Kevin Stone

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Puzzle 15 


Santa's Reindeer - Logic Puzzles

Santa always leaves plans for his elves to determine the order in which the reindeer will pull his sleigh. This year, for the European leg of his journey, his elves are working to the following schedule, that will form a single line of nine reindeer:

Comet behind Rudolph, Prancer and Cupid. Blitzen behind Cupid and in front of Donder, Vixen and Dancer. Cupid in front of Comet, Blitzen and Vixen. Donder behind Vixen, Dasher and Prancer. Rudolph behind Prancer and in front of Donder, Dancer and Dasher. Vixen in front of Dancer and Comet. Dancer behind Donder, Rudolph and Blitzen. Prancer in front of Cupid, Donder and Blitzen. Dasher behind Prancer and in front of Vixen, Dancer and Blitzen. Donder behind Comet and Cupid. Cupid in front of Rudolph and Dancer. Vixen behind Rudolph, Prancer and Dasher.
Can you help the elves work out the order of the reindeer?

Puzzle Copyright © Kevin Stone

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Puzzle 16 


Greenjack Round #1 - Logic Puzzles

You find yourself playing a game with your friend.

It is played with a deck of only 16 cards, divided into 4 suits:

   Red, Blue, Orange, and Green.

There are four cards in each suit:

   Ace, King, Queen, and Jack.

All Aces outrank all Kings, which outrank all Queens, which outrank all Jacks, except for the Green Jack, which outranks every other card.

If two cards have the same face value, then Red outranks Blue, which outranks Orange, which outranks Green, again except for the Green Jack, which outranks everything.

Here's how the game is played: you are dealt one card face up, and your friend is dealt one card face down. Your friend then makes some true statements, and you have to work out who has the higher card, you or your friend. It's that simple!

Round 1:
You are dealt the Green Ace and your friend makes three statements:

My card is higher than any Queen.
Knowing this, if my card is more likely to beat yours, then my card is Blue. Otherwise, it isn't.
Given all of the information you now know, if your card is more likely to beat mine, then my card is a King. Otherwise, it isn't.
Who has the higher card, you or your friend?

Puzzle Copyright © E.J. Shamblen

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