Can you replace the letters A, B, C, D, E, and F with positive, single-digit, non-zero numbers so that each circle contains the same total?
Solution to Problem:
A = 5
B = 4
C = 5
D = 1
E = 7
F = 8
To get started, look at the top left circle and the
top middle circle.
The top left circle contains A, 7, and 8 while the top
middle circle contains A, 8, B, and 3.
Since each circle must contain the same sum,
A + 7 + 8 = A + 8 + B + 3.
Subtracting A + 8 from each side, we obtain
7 = B + 3. Therefore, B =4.
Look at the two circles below these.
It can be seen that D must equal 1.
This gives you the sum of each circle (20).
Now you can solve for A and continue around the circles.
Correctly solved by:
1. Richard K. Johnson | La Jolla, California |
2. Rick Jones | Kennett Square, Pennsylvania |
3. Renata Sommerville | Austin, Texas |
4. Keith Mealy | Cincinnati, Ohio |
5. Justin Collins | Winchester, Virginia |
6. John Funk | Ventura, California |
7. Griffin | ---------- |
8. Christopher March | Virginia Tech, Blacksburg, Virginia |
9. David Powell | Winchester, Virginia |
10. Vanessa Kargenian | Rockford, Michigan |
11. Tori Eads | Winchester, Virginia |
12. George Gaither | Winchester, Virginia |
13. Izzy Kushner | Closter, New Jersey |
14. Matt McMurtry | Arlington, Virginia |
15. James Alarie | University of Michigan -- Flint, Michigan |
16. Geoff Keith | Santa Monica, California |
17. Josh Grewal | College of William and Mary, Williamsburg, Virginia |
18. Amy Lamport | Rockford, Michigan |
19. Sarah Jarrell | Columbus, Georgia |
20. Jonathan Pence | Virginia Tech, Blacksburg, Virgina |
21. Walt Arrison | Philadelphia, Pennsylvania |
22. Rob Maccubbin | Alexandria, Virginia |
23. Andrea Flandry | Columbus, Georgia |
24. Dave Marut | Old Dominion University, Norfolk, Virginia |
25. Ann Conger | Columbus, Georgia |
26. Mulford Waldrop | Columbus, Georgia |
27. David and Judy Dixon | Bennettsville, South Carolina |
28. Robert Calhoun | Columbus, Georgia |