I'm still unclear on why I am to negate sufficient when I come across unless, or should it just introduce the necessary condition?
"K cannot be selected for honor roll, unless H is selected to honor roll."
would I take H selected and move it to the sufficient and negate it?
/H ---->/K or contrapositive K----->H
or would it simply be
K----->H right from the start and have the "unless" introduce the necessary?
Please Help!!!