In each issue of the Automation Notebook we feature a section of brainteasers. These are the brainteaser answers from Issue 1, 2004 of the Automation Notebook. The brainteaser questions are repeated in black. The answers to the brainteaser questions are highlighted in red with explanations. You can view the brainteasers from Issue 1, 2004 without the answers here: http://library.automationdirect.com/brainteasers-issue-1-2004
Brainteaser Answers
1. Which rectangular area is larger?
A line is drawn from the top left corner to bottom right corner of the outermost rectangle. Area A and B are two rectangles. Which area is larger?
SOLUTION: Since the diagonal line intersects the junction of all the rectangles, areas C and D are equal, as well as areas E and F. Therefore area A and area B are equal.
2. Logic box with letters
Place the letters A to I into the 3 x 3 box. E is to the right of C. A is to the right of G which is above B, which is to the left of F. I is above D which is to the left of G.
SOLUTION: 
3. What numbers are A and C?
A x C x AC = CCC
A and C are single digit numbers. To make the equation as shown, what numbers should A and C be?
SOLUTION: 3 x 7 x 37 = 777
A = 3 and C = 7