I noticed that a few questions are paraphrased and reused every now and then. I don't blame the Quizmaster; how else are you gonna create that many general knowledge quizzes?!
I thought it would be mu since it is the common symbol meaning micro (10^-6) at least in the metric system. I have no idea what iota has to do whit anything small, could someone explain?
It's commonly used in the phrase "...not one iota of..." Jesus uses the phrase in one of His sermons. It gained that usage because it's the smallest written Greek letter.
I don't think it's a stretch at all. In science, delta means a small amount; in mathematics, epsilon... Iota was my third try. This might be one of those questions that punishes people in specific fields of study.
Capital delta means change, it doesn't have to be small, taking the limit as one does in calculus is a derivative. I was thinking that lowercase delta was used for partial derivative and just to be sure, I looked it up just now and found out I've been wrong all these years. I still don't know how I managed to get a math degree
Murder stats, like so many other stats, are meaningless if you count absolute numbers by political entity. Nigeria might in any case be higher than Brazil (depending on years counted), but per capita is a very different story, one which looks especially bad for the Caribbean and southern Africa. (El Salvador might be number one.)
(I did guess the answer correctly even though I didn't know what it was!)