probability homework question

[BruceZ]

[ QUOTE ]
I see another way to read the problem that I had not even considered before.
222A3, 33324, 44435, etc.
(but not 44436 or 44425 or 44426 etc.)
just exactly one rank above the trips and exactly one rank below the trips.

[/ QUOTE ]

That was my interpretation. Pococurante's too.