2d 13Probability of getting 1 13's is close to 0.077, about 7.69% percent. This is calculated by multiplying together all the probabilities of getting a 13 for each dice that has a 13.Two combinations of 2D 13 C 13 C NMR with spectral editing are presented. Diagonal-ridge removal enables detection of small or on-diagonal cross peaks. Arene peaks