2, 4.

SampleCodeNumber: ignore.
ClumpThickness: continuous.
UniformityCellSize: continuous.
UniformityCellShape: continuous.
MarginalAdhesion: continuous.
SingleEpithelialCellSize: continuous.
BareNuclei: continuous.
BlandChromatin: continuous.
NormalNucleoli: continuous.
Mitoses: continuous.