LetYouDown or Aaron does this look correct to you?
On a flop if there are N solutions for a straight, the probability is 2% x N. eg assume you have Q J for down cards so the solutions are A K T, K T 9 and T 9 8 and the probalility for the three solutions is 6%. The actual numbers per solution are ~1.95% ~3.91% ~5.87% and ~7.83% but when you're sitting at a table, 2%, 4%, 6% and 8% are close enough.
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