A B C Total D 0.18 0.12 0.00 0.30 E 0.42 0.28 0.00 0.70 Totals 0.60 0.40 0.00 1.00

Are the events C and E independent?

I know the answer isno, not how are they not independent? I've been struggling a bit with probability and cannot seem to figure this out.