LAsT paPeR Syndrome (LPS)

The journey was long... it is culminating in a 4MC paper which i barely prepared for..bleah.. i pray n hope tat everything i spot will come out and tat they wun change the format.. Out of 6 major topics, i totally never cover 2.. since it is 6 qns choose 4..
Prob(gamble will pay off) = 6C4 (2/3)^4 (1/3)^2 .. or is it .. i cant think now anyway..
Pls dun mix n match the qns, my dear lecturer.... one qn one topic hor dun xio hai..(wateva tat means)

Somehow i aint too excited abt the end..