First-success attempt probability
Distinguish failures before a first success from total attempts.
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Use comma-separated finite numbers on two lines. Magnitudes must be at most 1e9 and at least 1e-12, or zero.
The starting values are hypothetical. Results update as you edit. Use aggregate or synthetic inputs only.
Calculation results
- Success within cap
- 0.68359375
- Expected failures
- 3
- Expected attempts
- 4
How to interpret the output
Assumes independent attempts with a constant probability. Reports failures before success and total attempts as different endpoints. Source checked 11 November 2026.
Method reference