Dice notation
2d245
- 2d245
- 2 to 490
- mean 246
- mode 246
Rolling 2d245 gives a total between 2 and 490, with a mean of 246 and a standard deviation of 100.02. There are 60,025 equally likely ordered outcomes, and the most likely total is 246 at 0.408%.
The roll
Notation2d245
Dice2
Faces per die245
Minimum total2all 2 dice showing 1
Maximum total490all 2 dice showing 245
Distinct totals489
Mean246n(f + 1)/2 + modifier, exact
Variance10,004n(f² − 1)/12, exact
Standard deviation100.019998≈
Counting the outcomes
Ordered outcomes60,025245^2, every die distinguishable
Most likely total246
Chance of that total0.408163%≈
Ways to roll it245exact count
Chance of the minimum0.00166597%≈1 in 60,025
Chance of the maximum0.00166597%≈1 in 60,025
Shape of the distribution
489 distinct totals, too many to list individually.
1st percentile36≈1.05% of rolls are this or lower
5th percentile78≈5.003% of rolls are this or lower
25th percentile174≈25.075% of rolls are this or lower
50th percentile246≈50.204% of rolls are this or lower
75th percentile318≈75.214% of rolls are this or lower
95th percentile414≈95.125% of rolls are this or lower
99th percentile456≈99.009% of rolls are this or lower
Chance of rolling at least
5197.9592%≈
12487.5002%≈
24650.2041%≈
36812.7047%≈
4412.1241%≈
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