You should go in the exam prepared to do well in Quant because if you know how and when to apply the formulae you'll virtually be able to do well in it.
In Dec 05 there wehre so many marks to be scored just by knowing the Sharpe ratio, z-test, t-test (and knowing when to apply which test), cov, var, measures of central tendency, procedure for hypothesis test, regression etc.
Mind you I went into the exam thinking I only needed 60-70% knowledge and that only got me <50% on my paper...
HTH