well, this is one of the things that has been bugging me..
people who say they "cannot do math" and people who "can do
math"
i've always thought math, all you needed to do for the level we do,
is to look at the problem with a different perspective... and to
use the different types of tools to solve it..
all you need is a good teacher to show the way and light the
path...
those who "say they cannot" (note the quotation marks) seem to
spend an inordinate amount of time and energy trying to convince
others they cannot.. instead of using the imagination and effort
into understanding the problem and finding ways to solve it... i
wager, if you did use the time and effort towards the problem,
you'd solve it.. and from there, build on it and the mind becomes
more adept at mathematical stuff...
before the flamethrowers come out, here's the deal of why i say
these things:
i could not.. but someone taught me to be imaginative and to go for
it.. and showed me the way... and yes, i saw.. and saw that (our
level) math isn't that difficult.. all it took was a different
perspective, and effort with the will to do it.. you can..
my sister too.. there was once i broke an equation into 17
colour-coded lines for her when it could be done in 3 lines.. she
could not at that time because she refused to see it... trying more
to convince me that she could not.. but ultimately, she scored A1
for her E-Math and passed her AO Math..
so... what do you think? i don't believe "cannot means cannot"
while the person shows so much creativity, effort and will just to
show that he cannot 
(p.s. this does not mean the insanely complex math required for
stuff like Fermat, Goldbach or Riemann Hypothesis
)