[Mason Malmuth]

Hi pair:

I didn't mention this in the article but you should probably consider the quality of folded hands. For instance, with an earlier position raiser, there are players who would fold a hand like queen-ten suited or unsuited but who would automatically play this in an unraised pot. That makes the odds of flopping a set of treys a little better than your calculation shows, so in my opinion 5-to-1 is a reasonable guess.

best wishes,
Mason