Two fair 6 sided dice p(sum< 12)p(dice show same value)

There are 36 combos for 2 6-sided dice: 6 possibilities for the first die times 6 for the second. 

1. There is only one combo that does not fit this, which is 6&6 since it is equal to 12.
That means 35 out of 36 work. 35/36
As a decimal it is 0.97 and as a percent it is 97.%. 

2. There are 6 combos in which the dice show the same value: 
1&1, 2&2, 3&3, 4&4, 5&5, 6&6 
That is 6/36, which is 1/6. 
As a decimal it is 0.1 and as a percent it is 16.%.

Hope this helps!