Quant: Formulae

Hi, sorry if this is a repeat question. But which all formulae to be remebered in Quant? There are complex formulae on p 304,305,309 of Scweser Quant book (Regd t-test for difference of means and paired comparison test), do we need to remember them?

There are very less chances of questions on F test Chi square on genrally…but dont take any chance…its best if u can remember it