Doppelgänger Encounter Probability Calculator

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Lottery Odds Calculator - Estimate Your Chances

Compute the probability of winning a lottery based on the numbers drawn and the size of the number pool.

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Crowd Crush Hazard Calculator

Estimate the probability of a dangerous crowd crush during large gatherings using density, exit capacity, and movement speed.

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Bystander Intervention Probability Calculator - Modeling the Diffusion of Responsibility

Estimate the chance that someone will help in an emergency based on group size and individual willingness. Explore how the bystander effect influences collective action.

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Calculate the chance of rolling a desired result with multiple dice and see the expected number of successes.

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Calculate the chance of receiving a rare loot drop in video games. Enter drop rate and number of attempts to see overall probability.

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Raffle Odds Calculator - Probability of Winning Prizes from Ticket Draws

Estimate your chances of winning in a raffle given total tickets, your tickets, and number of prizes.

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