yeah. sia si wo. if got so easy we everyday camp at sgpools liao. lols. anyway, that's wat soccer betting kakis last time always say. those were the times...
anyway when u buy system 7 - 12, u will win more lower group shares cos there will be multiple permutations.... it's a game of p&c, if u understand p&c, u'll understand the workings of this game...
for e.g. if u buy system 7 and got 3+1 numbers (group 6), then
A= winning nos.
B,C,D= non-winning nos.
out of the 7 combinations, these are winning:
AAAABC
AAAACD
AAAABD
so u win 3x group 6, which is 3x$20 = $60.

system 7 $3.50 (7 combinations)
system 8 $14 (28 combinations)
system 9 $42 (84 combinations)
system 10 $105 (210 combinations)
system 11 $231 (462 combinations)
system 12 $462 (924 combinations)
last yr, got one guy buy system 12 hit jackpot. but it seldom happens so dun whack $462. bet small small can alrd.
die, we like advocate gaming.... it's a game for fun only, not investment...

check this out...
http://www.singaporepools.com.sg/Lottery?page=toto_howtoplay&area=prize#prizes