Probability of card dealing

19+26=45
Are you including jokers as possibilities for the 46th card?

If you meant 20 of one color and 26 of the other, then:
C(26,20)*C(26,26)*2 / C(52,46) = 0.0226175577

If you meant 19 of one color and 26 of the other (45 cards total), then:
C(26,19)*C(26,26)*2 / C(52,45) = 0.0098337207

C(n,r) = n! / (r! * (n-r)!)

many thanks. Yes, I meant 19 of one colour and 26 of the other, obviously mistyped the total!