2-7 TD Heads Up

[Hosayif]

Like, say i have a 2479, if i draw for the 7, my hand is in a different percentil than if i draw for the 9, so knowing these percentages would help in making a decision to perhaps call with the 2 card draw or raise with a one card draw. (assuming the 2 card is a dog to the one card, once again, im brand new at thsi game)