2011-11-07, 01:59 PM
Shidoshi Wrote:(5/6)^3 chance to get (-1) - ~58%
3 * 1/6 * (5/6)^2 chance to get (+1) - ~35%
3 * (1/6)^2 * 5/6 chance to get (+2) ~7%
(1/6)^3 chance to get (+3) ~0.5%
Averages to -0,0787
Love the avatar btw... and yes you're correct.
When betting a dollar you're only receiving back about 92 cents (aka losing out on about 8 cents per game). Let's say six people play a minute a game, with a house minimum of $5 per play... the even though they only lose out on 8% per play... the house gets to make over $100 an hour off of them
6) Another gambling game! (probably a bit easier this time)
Let's check the license plates of the next twenty cars we see and notice the last two digits of each plate. I'll bet you $20 that at least two of the cars will have plates with the same last two digits. So you win if there is no match... you lose if there is a match.
"Hmm.... since we're worried about the last two digits... there are 100 choices ranging from 00 to 99. The chance of two of them matching is 1/100 for two chars... so since there's 20 cars, there's about a 20/100 chance that they make.... or 80% chance I'll win...sweet... let's start."
ex Plate1: F567RET plate2: E967WER match up. (Just pretend ALL plates are like this "letter-number-number-number-letter-letter-letter", ignoring custom plates.)
The bet is $20 at 1:1 (aka if you win, you get $20, if you lose you lose $20). This may or may not be bad odds to play at.... what if you were offered 5:1 (aka a bet of $20 can net you $100 if you win).