I want to randomly select 3 images out of 100+ images, and embed them in different questions throughout the survey. It is crucial that every single respondent will not see the same image twice (randomizing without replacement), for example, respondent A can see images 1, 2, 3 but not images 1, 1, 2. What is the best way to do this? the number of questions after each image varies (and is actually conditioned on other questions previously answered using display logic).
Best answer by rondev
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