🎲 Random number generator without duplicates 🎲

Use the random number generator from Cogitans: enter the minimum, maximum and how many numbers you need, then draw without duplicates.

Results

Available in range:
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Fairness: numbers are drawn without replacement using an unbiased Fisher Yates shuffle. When supported, crypto secure randomness is used.

How can I pick random numbers?

Use the random number generator from Cogitans: enter the minimum, maximum and how many numbers you need, then draw without duplicates. A partial Fisher-Yates shuffle uses browser cryptographic randomness with rejection to avoid modulo bias. Only sampled positions are stored, then the results are sorted. Minimum: 1. Maximum: 50. Count: 5. The result contains five distinct integers from 1 through 50 in ascending order. Another draw can return different values.

Practical questions

How can I choose random questions for a quiz?

Number your questions, then use the Cogitans random number generator to pick numbers without duplicates. To choose five questions from forty, set the minimum to 1, the maximum to 40 and the quantity to 5. Use the questions matching the selected numbers.

Can the minimum and maximum numbers be picked?

Yes. Both the minimum and maximum can be selected.

Why are my numbers not in the order they were drawn?

Sorting happens after selection to make results easier to read. Display order is not selection order.

Endpoints and range size must be integers represented exactly in JavaScript. The count cannot exceed the available values. Generation time and memory usage increase with the number of requested results.

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