Betting Talk

for the math gurus out there

acetotenacetoten Senior Member
edited March 2015 in Sports Betting
playing roulette and u play 10 solo numbers .............. what are odds of hitting any 1 of your numbers 9 out of 10 spins?

36 numbers plus 0 and 00 so 10 out of 38 would be 1 spin , but how would u figure this for hitting 9 of 10 ?

thanx in advance

ACE

Comments

  • DeadMoneyDeadMoney Senior Member
    edited March 2015
    Could be wrong, but using a 26% chance instead of 10/38 I got ~.00004 or ~.004 percent. Basically, don't play roulette cause everywhere you place your chips has the same negative EV.
  • TommyLTommyL Super Moderator
    edited March 2015
    DeadMoney wrote: »
    Could be wrong, but using a 26% chance instead of 10/38 I got ~.00004 or ~.004 percent.

    I agree.
  • bcl4bcl4 Senior Member
    edited March 2015
    DeadMoney wrote: »
    Could be wrong, but using a 26% chance instead of 10/38 I got ~.00004 or ~.004 percent. Basically, don't play roulette cause everywhere you place your chips has the same negative EV.

    Yea that's correct. If I remember my combinatorics, for hitting it exactly 9 out of 10 times, the math would be --> C (10,1) * (10/38)^9 * (28/38) = .00446%
  • firstclassfirstclass Senior Member
    edited March 2015
    i play the same 20 numbers at a time.. just left casino. lost tonight. just started playing this year. was up about 3k this year at first now up about 800
  • firstclassfirstclass Senior Member
    edited March 2015
    The key for me is to hit the first spin. then double upon key numbers and play 3 more numbers added to the 20 i already play.

    if i hit 3 spins in a row the profit gets going crazy. the secret is know when to leave
  • RonbetsRonbets Senior Member
    edited March 2015
    firstclass wrote: »
    the secret is know when to leave

    I've heard that expression somewhere before.............oh yeah Kenny Rodgers. I can never pinpoint the exact time though.:p
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