I don't know Razz and hopefully I'm not missing a detail.
Quote:
What are the odds that 234 ends up hitting 56 in the four cards remaining that you will dealt?
A slick way to tackle this is 1-P(miss), using inclusion-exclusion for P(miss):
1 - [2*C(45,4) - C(41,4)]/C(49,4) = 7.153%
You were probably attempting the additive approach which would be this:
[4*4*C(41,2) + 2*C(4,2)*4*41 + 2*4*4 + C(4,2)^2] / C(49,4) = same answer