Break

Sorry I haven't blogged in a while.
Did you try the matrix questions?

I need to fix some typos but the answers are here now.

10 questions:
C A C A D || C C C D C

20 questions:
B C D C A || B C D B C || C C A D C || A C D B C

Matrices - Test yourself

This was one of the (easy) questions I gave in a first-year undergraduate matrix exam last year:

If you can answer that, try more test questions on matrices here.

In other news, Inception (a dream within a dream) won four at the Oscars and The Social Network (the technology startup film) won two.