Chance of nuts beating second nuts with same ranks, suits?

[rufus]

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Odds of me calculating the odds of it at being nuts vs second nuts: 0

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It's actually pretty easy. For suit to matter it's got to involve a flush. For the double-suiting that means 4 or 5 flush. We can skip straight-flushed boards b/c there is no second nut, that leaves 11 choose 5 - 1 flush boards, and 13 choose 4 times. For any partitcular set up like that, there is exactly one first and one second nut card, so there are 6 ways (choose the second suit, and who's got the first nut) to have it happen.