nirpam wrote:
Do you break a made flush at the bottom in a 10 play 25c machine if
there is a 4 card str flush open ended ?
A word of advice -- you really need to get yourself vp tutor software
(such as WinPoker or Frugal VP) as well as a source for game
strategies -- with what you're putting through the machines, the cost
is a drop in the bucket and will payoff immediately! 
I'll note that vp strategy is not influenced by whether you're playing
single line or multiplay, nor the denomination. Here are the answers
provided by Frugal VP (assumes 9/5, 50sf paytable):
ยทยทยท
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Flush v. 4 cd SF? -- the Flush is MUCH stronger, by 2.5 bets (about
$32 each time it occurs on this machine).
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Do you hold ace alone if there ace plus J unsuited ?
w/1200 cr quad Aces? Lone Ace over any unsuited 2 Hi, exc QJ).
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Do you break a dealt 333XX full house ?
Do you break a dealt AAAxx full house ?
Same answers as in 10/7 DB -- hold the 3's FH, break the A's FH.
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Do you hold for royal by breaking 2 pairs of face cards and hold 3
to the royal ?
Hold both any hi pair and any 2 pair over 3RF.
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Give yourself a belated holiday (or early birthday) present and grab
some software! 
- Harry