I disagree. This isn't a test of linguistic comprehension...or at least shouldn't be. I used to find tests like this infuriating in High School, all the while designing and building electronic devices and circuits on my own. What the test above illustrates is the limitation in presenting *cogent and logical challenges* in a lexicon that states it precisely. If this author was attempting to program a logical circuit, there would be a number of glitches, to say the least. To test logical acumen takes a level of logic higher than that being tested. Author of the quiz fails.

This shouldn't be about 'tripping up' the mathematical mind. It should be about assessing it.