Recognised as Dice notation
2d305
- 2d305
- 2 to 610
- mean 306
- mode 306
Rolling 2d305 gives a total between 2 and 610, with a mean of 306 and a standard deviation of 124.5151. There are 93,025 equally likely ordered outcomes, and the most likely total is 306 at 0.328%.
The roll
Notation2d305
Dice2
Faces per die305
Minimum total2all 2 dice showing 1
Maximum total610all 2 dice showing 305
Distinct totals609
Mean306n(f + 1)/2 + modifier, exact
Variance15,504n(f² − 1)/12, exact
Standard deviation124.51505933≈
Counting the outcomes
Ordered outcomes93,025305^2, every die distinguishable
Most likely total306
Chance of that total0.327869%≈
Ways to roll it305exact count
Chance of the minimum0.00107498%≈1 in 93,025
Chance of the maximum0.00107498%≈1 in 93,025
Shape of the distribution
609 distinct totals, too many to list individually.
1st percentile44≈1.017% of rolls are this or lower
5th percentile97≈5.005% of rolls are this or lower
25th percentile217≈25.193% of rolls are this or lower
50th percentile306≈50.164% of rolls are this or lower
75th percentile395≈75.039% of rolls are this or lower
95th percentile515≈95.098% of rolls are this or lower
99th percentile568≈99.029% of rolls are this or lower
Chance of rolling at least
6397.9672%≈
15487.5001%≈
30650.1639%≈
45812.6643%≈
5492.0994%≈
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