05AB1E, 4 programs, length 1519
Programs
)O! # outputs 1 fac(sum([])) A`\ # outputs y 4 2nd_last(alphabet) THf`x # outputs 4 last_primefactor(int(10,16))*2 TL`\ # outputs 9 2nd_last(range[1 ... 10]) Output and programs combined
!)1449ALOT\\``y149AHLOTT\\```fxy