hi August80,

if you mean "what is the probability of rolling a combined 8 followed immediately by rolling a combined 7",

then the probability of rolling an 8 is

while the probabilty of rolling a 7 is

as there are 5 ways to roll an 8 ....... 62 53 44 35 26

and 6 ways to roll a 7 .................... 61 52 43 34 25 16

multiply the probabities to find the probability of an 8 before a 7 (or a 7 before an 8)

since the sequences are 6261 6252 6243 6234 6225 6216 and similarly for the other ways starting 5, 4, 3 and 2.

That's 6(5)=30 ways out of

which means the probability is