A few simple questions (5cd, 2-7, razz)

[ddrstel]

one 5cd, one 2-7 and one razz (which i'll put here to save starting a new thread in the stud forum)

1) 5cd - MP opens, CO calls, i 3-bet with 888T4, 2 calls. Both MP and CO draw 1. Do i draw 1 or 2 here? Whats the significance of drawing 1 or 2? Does it disguise my hand better?

2) 2-7 - HU on the button with 2345T vs aggro opponant. Final draw, he draws one. Do i pat or draw 1 as well? If he checks, do i bet for value? What hands are favorite vs a single card draw?

3) Razz - a simple one! Whats the difference between a rough and a smooth 9?


I realise these are probably really easy, but many thanks in advance to anyone that can help.