We had some family at Ronald McDonald House recently. Children's Hospitals are such hard places to be around. Definitely going to support this. $50 is a drop in the bucket.

Oh yeah, forgot that charitable donations are tax deductible. Even better, haha.

There's some silly math in this thread. Stats talk.

The chance that you win a raffle = number times entered/total number of entries.

For raffle 1, if you buy 1 ticket, you have a 1/200 =0.5% chance.
If you enter raffles 1-4 with 1 ticket, your chance at winning at least once = 4 entires/800 drawings = 1/200 = 0.5% chance.
If you enter raffle 1 3 times, 2 3 times, 3 6 times, and 4 1 time = (3+3+6+1) = 13/800 = 1.625% chance.

Regarding BeaglePuss's misinterpretation:

If you bought 1 ticket for each of 200 raffles, by the explanation above:

200/(200*200) = 200/40000 = 0.5%

NOW!

If you enter each raffle 1 time, you have 4 entries.

P(winning one pinball machine) = 4/800 = 0.5%
P(winning all 4 raffles) = (1/200)^4 = 6.25e-8 %

Winning multiple times is multiplicative, winning just one time is not.

Not sure why it maters what your chances are, though.