Rant: Percentile dice suck

The below table is all you need.  Percentile dice are for dumb normies.  Nerds use single dice for proper odds modulation.  Rolling two dice for percentiles is actually too much effort, plus you're ending up with a chunky d10 mechanic where the second d10 only matters on 1/10th of rolls.  Proper gamers use a d20, and the rest of the dice when necessary.  The first column is success percentage chance, rounded to tenths.  The second column is "roll high" percentage chances.  The third is "roll low" percentage chances.  

 

Success Chance	>=	<=
5%	20/20	1/20
8.3%	12/12	1/12
10%	19/20; 10/10	2/20; 1/10
12.5%	8/8	1/8
15%	18/20	3/20
16.7%	11/12; 6/6	2/12; 1/6
20%	17/20; 9/10	4/20; 2/10
25%	16/20; 10/12; 7/8; 4/4	5/20; 3/12; 2/8; 1/4
30%	15/20; 8/10	6/20; 3/10
33.3%	9/12; 5/6	4/12; 2/6
35%	14/20	7/20
37.5%	6/8	3/8
40%	13/20; 7/10	8/20; 4/10
41.7%	8/12	5/12
45%	12/20	9/20
50%	Odd/Even, any die	Odd/Even, any die
55%	10/20	11/20
58.3%	6/12	7/12
60%	9/20; 5/10	12/20; 6/10
62.5%	4/8	5/8
65%	8/20	13/20
66.7%	5/12; 3/6	8/12; 4/6
70%	7/20; 4/10	14/20; 7/10
75%	6/20; 4/12; 3/8; 2/4	15/20; 9/12; 6/8; 3/4
80%	5/20; 3/10	16/20; 8/10
83.3%	3/12; 2/6	10/12; 5/6
85%	4/20	17/20
87.5%	2/8	7/8
90%	3/20; 2/10	18/20; 9/10
91.7%	2/12	11/12
95%	2/20	19/20