2006 iTest Problems/Problem 19
Problem
Find the sum of 
by solving the Sudoku puzzle below.
1 _ _ | 3 5 8 | _ _ 6 4 _ _ | _ _ _ | _ x 8 _ _ 9 | _ 1 _ | 7 _ _ --------------------- _ z _ | 1 _ _ | _ 5 _ _ _ 3 | 2 _ 4 | 8 _ _ _ 2 _ | w _ 9 | _ _ _ --------------------- _ _ 6 | _ 2 _ | 9 _ _ 3 _ _ | _ y _ | _ _ 1 2 _ _ | 8 4 3 | _ _ 7
Solution
![[asy] unitsize(2.5); draw((0,0)--(0,90)--(90,90)--(90,0)--cycle,linewidth(2)); draw((10,0)--(10,90)); draw((20,0)--(20,90)); draw((30,0)--(30,90),linewidth(2)); draw((40,0)--(40,90)); draw((50,0)--(50,90)); draw((60,0)--(60,90),linewidth(2)); draw((70,0)--(70,90)); draw((80,0)--(80,90)); draw((0,10)--(90,10)); draw((0,20)--(90,20)); draw((0,30)--(90,30),linewidth(2)); draw((0,40)--(90,40)); draw((0,50)--(90,50)); draw((0,60)--(90,60),linewidth(2)); draw((0,70)--(90,70)); draw((0,80)--(90,80)); label("1",(5,85)); label("7",(15,85)); label("2",(25,85)); label("3",(35,85)); label("5",(45,85)); label("8",(55,85)); label("4",(65,85)); label("9",(75,85)); label("6",(85,85)); label("4",(5,75)); label("3",(15,75)); label("5",(25,75)); label("9",(35,75)); label("7",(45,75)); label("6",(55,75)); label("1",(65,75)); label("2",(75,75)); label("8",(85,75)); label("6",(5,65)); label("8",(15,65)); label("9",(25,65)); label("4",(35,65)); label("1",(45,65)); label("2",(55,65)); label("7",(65,65)); label("3",(75,65)); label("5",(85,65)); label("9",(5,55)); label("6",(15,55)); label("4",(25,55)); label("1",(35,55)); label("8",(45,55)); label("7",(55,55)); label("3",(65,55)); label("5",(75,55)); label("2",(85,55)); label("5",(5,45)); label("1",(15,45)); label("3",(25,45)); label("2",(35,45)); label("6",(45,45)); label("4",(55,45)); label("8",(65,45)); label("7",(75,45)); label("9",(85,45)); label("7",(5,35)); label("2",(15,35)); label("8",(25,35)); label("5",(35,35)); label("3",(45,35)); label("9",(55,35)); label("6",(65,35)); label("1",(75,35)); label("4",(85,35)); label("8",(5,25)); label("5",(15,25)); label("6",(25,25)); label("7",(35,25)); label("2",(45,25)); label("1",(55,25)); label("9",(65,25)); label("4",(75,25)); label("3",(85,25)); label("3",(5,15)); label("4",(15,15)); label("7",(25,15)); label("6",(35,15)); label("9",(45,15)); label("5",(55,15)); label("2",(65,15)); label("8",(75,15)); label("1",(85,15)); label("2",(5,5)); label("9",(15,5)); label("1",(25,5)); label("8",(35,5)); label("4",(45,5)); label("3",(55,5)); label("5",(65,5)); label("6",(75,5)); label("7",(85,5)); [/asy]](http://latex.artofproblemsolving.com/a/5/c/a5c1e2de1a8ae27672e0b4ebd7ed6eaca7314d66.png)
Therefore, ![\[w+x+y+z = \boxed{22}\]](http://latex.artofproblemsolving.com/f/f/5/ff5ad8a2a826a251c569018bba02ead8633b1aac.png)
See Also
| 2006 iTest (Problems, Answer Key) | ||
| Preceded by: Problem 18 |
Followed by: Problem 20 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 • 29 • 30 • 31 • 32 • 33 • 34 • 35 • 36 • 37 • 38 • 39 • 40 • U1 • U2 • U3 • U4 • U5 • U6 • U7 • U8 • U9 • U10 | ||
