Random Selection

A draw is a way of leaving a decision to chance, such as selecting one or more items from a list.

Used to ensure fairness, random drawing can be applied in various contexts, such as contests, group selections or the distribution of gifts.

To randomize a choice or create a sweepstake in this generator, enter elements to pick and the number of items to select, the program will generate the list of winning/lucky items randomly. This generation/randomization is done without bias and uses a pseudo-random generator (PRNG).

In many countries, it is not longer mandatory to go through a bailiff to file the settlement and result of a game/contest/lotto/tombola/lottery. In order to avoid disputes it is advisable to draft a rule, and to prove the draw, the simplest is to cast it live (easy on Youtube, Instagram, X/Twitter or Facebook).

If a regulation is written, use something like:

Free contest [with/without] purchase obligation from yyyy-mm-dd at 00:01 until yyyy-mm-dd at 23:59 [indicate timezone], limited to one entry per person. Participation in the game is via [indicate how to participate: fill out a form, send a message, leave a comment, etc.]. The draw will take place on yyyy-mm-dd on the dedicated website https://www.dcode.fr/random-selection [indicate the process used: by incorporating the names of the participants or by drawing a number between 1 and N with N the number of participants numbered chronologically].

If an item is present multiple times in the list then it is more likely to be selected.

Without replacement, an item cannot be selected more than once in a draw of multiple items. The picked element is not put back in the pile of the selectable elements, it is set aside, it is the case on most random selection processes.

With replacement, if multiple items have to be selected, then items are picked one after the other and replaced in the item list to select and thus, they can appear more than once.

From a lower limit (minimum) and an upper limit (maximum), the randomizer generates a number automatically in the interval.

Pseudo-random number generators use algorithms to produce a sequence of numbers that appear random. They are sufficiently unpredictable for most drawing purposes, although technically deterministic.

In Excel, use the RAND() or RANDBETWEEN() function to assign a random number to a cell in the spreadsheet.

The dCode randomizer can generate groups (or pairing groups) depending on the group size or the total number of groups.

dCode can generate a bijection af a group 1 in a group 2. Input all two groups one after the other.

The dCode random picker generator can assign each person to another (distinct of itself), which is useful for a Secret Santa and christmas gifting (only the draw is free, not the gift).

First create groups of similar level (first the seeds, then etc.) of the same size N, then randomly associate to each item of a group a random number (from 1 to N). Each item having the same number is in the same tournament pool. See Round Robin Generator or the Tournament Tree Generator.