@mha2604,
1. Create a MC question with your 400 (20x20) combinations as choices (A1B1, A1B2, ... A20B20).
2. Add Advanced Randomization to randomly display 10 of the 400 and check "Evenly Present"
3. Hide the question with JS: `jQuery("#"+this.questionId).hide();`
4. Add a loop & merge block, and loop based off the displayed choices in your MC question with the 400 combinations.
5. Add your image urls for A and B as loop & merge fields 2 and 3.
6. Add your A/B MC question to the loop, pipe in loop & merge fields 2 and 3 as the choices, and randomize.
Hi! Is it possible to prevent the same picture from showing? So that picture A1 only is displayed once, but he picture it's being showed with is random... Likewise picture B1 would only be shown once, until all the pictures have been displayed (but in a random order, and in random pairs).
Thanks in advance