Well I came up with a "green" "wrench".
But the test may have been spoiled ....
I was trying to figure out how to handle a binary operator with only one operand. (ie "82 + ")....
Then I was trying to figure out how to handle two operands with no operator (ie "25+5 2")
edit: It seems like the goal of the test is to revert the brain to a simple state. Basically in order to get you to immediatly think of simple concepts like "red" "hammer" it asks you to do simple math. For a lot of people this is a very big change of pace as most people aren't asked to do this sort of addition ...ever. I think you are far more likely to come up with another answer if you are decent at this sort of addition.








