Could you pass the 11-plus?

[andrewducker]

Check here - I got 13/15 - I ended up skipping questions 10 and 11 in order to finish inside the ten minute time limit.

Comments

[cartesiandaemon.livejournal.com]

I got the last four right, but don't think it was for the right reason. #13 was supposed to be a simple algebraic sequence, but I kept thinking it ought to have something to do with primes.

Are #12 and #15 supposed to be interleaved constant-difference sequences? That was the description I used, and it felt right, but it could easily have been something else with the information given.

[sigmonster.livejournal.com]

#13 has nothing to do with primes (31 is missing). They just chose to start on 17 because they are mean and horrid.

There are an awful lot of primes which differ by exactly 2; I think it's still open whether or not the number is infinite...