Question 31578
Draw two columns.
In the 1st column put HEAD and a suitable distance below it TAIL.
In the 2nd column put 1,2,3...6 to the right of Head and to the 
right of tail.
Notice that there are 12 pairs.
Only one pair shows Head,2.
So the probability of (head,2) is 1/12
Cheers,
Stan H.