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Difficulty: 3 of 5 Latest: Simultaneous Settlement (in Just Math) Rating: 5.00
Without solving for x and y, determine all possible values of x*y in this simultaneous equation:

x+x*y = 8 and, y+x*y = 9

Note: Solving for 1/x, 1/y, -x or -y is similarly NOT allowed.

(No Solution Yet, 5 Comments) Submitted on 2012-01-27 by K Sengupta   
Difficulty: 3 of 5 Bonus: Greetings (in Riddles) Rating: 2.31
If I sent this message to all of my friends and relatives at a particular time of the year, what would i be tryin to say to them?

"ABCDEFGHIJKMNOPQRSTUVWXYZ"

(Solution Posted, 31 Comments) Submitted on 2003-02-18 by Anoop   
Difficulty: 3 of 55-by-5 Square Tic-Tac-Toe (in Games)
Posted on 2012-01-26 by Dustin (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Odd One Out II (in General) Rating: 4.00
Posted on 2012-01-25 by K Sengupta (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Logical connectives (in Algorithms) Rating: 4.50
Posted on 2012-01-24 by Math Man (No Solution Yet, 6 Comments)
Difficulty: 4 of 5Elite Etile (in Word Problems)
Posted on 2012-01-23 by K Sengupta (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Four Point Spheres (in Probability)
Posted on 2012-01-22 by K Sengupta (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Yes and no (in Just Math)
Posted on 2012-01-21 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Isosceles from Regular (in Shapes) Rating: 5.00
Posted on 2012-01-20 by Jer (No Solution Yet, 13 Comments)
Difficulty: 3 of 5'W'here to Start (in Cryptography)
Posted on 2012-01-19 by Dustin (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Find Merkle (in Probability)
Posted on 2012-01-18 by brianjn (No Solution Yet, 11 Comments)
Difficulty: 3 of 5Suffix Settlement (in Word Problems) Rating: 5.00
Posted on 2012-01-17 by K Sengupta (No Solution Yet, 6 Comments)
Difficulty: 2 of 5Sum Binary Digits (in Probability)
Posted on 2012-01-16 by K Sengupta (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Maybe? (in Just Math) Rating: 3.00
Posted on 2012-01-15 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 52011 Square Sum End (in Just Math)
Posted on 2012-01-14 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 4 of 5DIY prime magic (in Numbers)
Posted on 2012-01-13 by Ady TZIDON (No Solution Yet, 10 Comments)

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