Second-Chance Drawing Odds Calculator

Second-Chance Drawing Odds Calculator

Non-winning scratch tickets or lottery entries can often qualify for a separate "second-chance" bonus prize drawing - this calculator estimates your odds of winning at least one prize in such a drawing.

P(Win At Least One) = 1 - (1 - Your Entries/Total Entries)^{Number of Prizes}

Example

5 entries out of 100,000 total submitted, with 50 prizes awarded:

Entry Share = 0.005% → ~0.25% chance of winning at least one prize

An Approximation Worth Understanding

This treats each prize as an independent draw with replacement from the full entry pool - a reasonably accurate approximation when the total entry pool is much larger than the number of prizes awarded (as is typically the case), though the actual official rules for any specific second-chance promotion determine the precise drawing mechanism used, which may differ slightly from this simplified model.

Why Bother Entering Non-Winning Tickets

Second-chance drawings effectively extend the value of a losing ticket beyond its initial purchase - since the ticket has already been paid for, entering it into a second-chance drawing (when available) adds a genuinely free additional chance at a prize with no further cost.