I screwed up number two, because I didn't read carefully, and thought it was asking about the minute hand (which was simple--a hundred twenty degrees). And I couldn't manage number five in my head. I was trying to do the algebra, and couldn't manage it. And a couple of them, as noted, are trick questions.

And I certainly wouldn't have done that well at age eight.

7 out of 8. Drat. Screwed up on the minute hand question too.

4 out of 8. I can do calculus, but basic arithmatic is beyond me.

I blame it on the blocks we were given in grade school math -- we were supposed to figure out "relationships" with them. I built stuff with them instead.

7 of 8. Oddly enough I answered just like Terry w/regards to the triangle: 1cm. Didn't pay enough attention to the "right triangle" part.

So I have the attention span of an 8 year old, I guess.

I got 6 of 8 as well, but I think I was biased by reading you comment on the minute hand, because I misread that question completely.

I got both trick questions, because the 5cm with right angle comment caused me to expect the 3/4/5 triangle, which wasn't there. The second one is too obvious.

I missed the really simple one about the heading to school by making it too complex.

Note the answer to the first question is incomplete:

"Yes. If they did not intersect, the distance between centers would have to be more than 5 cm."

Or less than 1 cm. In fact I thought it was a trick question, and spent several seconds deciding whether smaller circle is inside the larger one.

I was biased by reading you comment on the minute hand

Did I mention I did poorly in Grammar exams.

Either 4 or 5 correct. Couldn't imagine how #8 could be calculated.

7 of 8. I mis-calculated the brothers walking home, which should have been my strongest question, based on my penchant for getting such questions right.

And yes, I threw out the assertion about the 2/2/1 triangle being a right triangle, and also figured out that there wasn't enough information in the final question to answer it.

Of course, a "real" test of intelligence shouldn't have to include trick questions, unless it's multiple choice and one of the choices is "not enough information provided".

8 out of 8, although I had to talk through the problems in my head. Why you should handicap yourself by not using paper is beyond me - it sounds like "Of course you can drive a car, but the real question is, can you do it blindfolded?"

There's a non-euclidian solution to the "impossible" triangle that I couldn't have figured out before university.

So a young man can do math tricks in his head. Big whoop.

The real question is: can he figure out how to make a pizza that doesn't burn the roof of your mouth when it's fresh from the oven? That will make him smart AND rich.

8/8 here, but the walking home one was for some reason the trickiest ... I initially wanted to say 25 for some reason.

Don't think I could have done all these at 8 (though I could be wrong). 10 or 12, no problem.

7/8 - blew question 5.

Special notebooks are 10 cents.
Regular notebooks are 20 cents.

There are 80 notebooks total.

I'll go with 80 special notebooks and 0 regular notebooks. Then I'll resell the 80 special notebooks on eBay for 25 cents each.

Odd, I could have sworn that we did the exact same set of questions at the end of the 4th grade at my old primary school to get into the advanced math class.

I guess those adelaide yokels are just slower than the rest of us east coast city folk. Too much fertilizer in the water perhaps.

The real question is: can he figure out how to make a pizza that doesn't burn the roof of your mouth when it's fresh from the oven?

Yes. When he makes pizza he lets it stand for a couple of minutes before eating it. Effing genius, I know!

6 out of 8 here too -- and the right triangle one, and the notebooks one, were the easiest ones for me...

Dang. Got them all.

Number 5: Takes little brother ten minutes longer, he started five minutes earlier, so we meet halfway for us both. Seemed kinda obvious.

I don't like questions in tests like this with "impossible" answers like the triangle one or the notebooks. I had a question like that from a senior physician during and M&M once and there was no right answer. He just asked it to watch me twist in the breeze, for sport, the putz.

Of course in Real Life, I guess there are questions with impossible answers. I personally get apprehensive when I think about the idea that there are questions we can't even ask, let alone answer.