Question 1042660
The sample space is 
===2====3====4====5 red
4--2,4---3,4----4,4---5,4
5--2,5---3,5----4,5---,5,5
6--2,6---3,6-----4,6---5,6
7--2,7----3,7----4,7---5,7
black
{(4.4),(3,5),(2,6)}=sum to 8.