A randomizer within a randomizer?

Do you have 75 blocks for each scenario?

Check this https://www.qualtrics.com/support/survey-platform/survey-module/survey-flow/standard-elements/randomizer/#AddingARandomizer to add a randomizer.

Enter 50 in place of 3 in your survey

Hope this helps

Hi,

Randomizer
    Randomly present 10 of the following elements
        Show Block : Type 1
            Randomizer
                Randomly present 5 of the following elements
                    Show Block : Type 1 Scenario A
                    Show Block : Type 1 Scenario B
                    Show Block : Type 1 Scenario C
                    Show Block : Type 1 Scenario D
                    Show Block : Type 1 Scenario E
        Show Block : Type 2
            Randomizer
                Randomly present 5 of the following elements
                    Show Block : Type 2 Scenario A
                    Show Block : Type 2 Scenario B
                    Show Block : Type 2 Scenario C
                    Show Block : Type 2 Scenario D
                    Show Block : Type 2 Scenario E
.
.
.
        Show Block : Type 15
            Randomizer
                Randomly present 5 of the following elements
                    Show Block : Type 15 Scenario A
                    Show Block : Type 15 Scenario B
                    Show Block : Type 15 Scenario C
                    Show Block : Type 15 Scenario D
                    Show Block : Type 15 Scenario E

Yes, I have them in the randomizer, but I would like it to be more random than this. I want it to randomly select 5 scenarios, 1 from each type, 10 times without repeating a scenario. Somewhat like what you have above, but instead it looks like this:

Randomly present 5 of the following elements

Show Block : Type 1 Scenario A 

Show Block : Type 3 Scenario B

Show Block : Type 5 Scenario C

Show Block : Type 13 Scenario D

Show Block : Type 15 Scenario E

but I want the selection to be completely random.

You could have a first randomizer used to select which blocks have to be displayed but not display them in that randomizer. Instead, fill one or multiple EDs with the list of selected blocks or with true/false flags.

Then, have a second randomizer with your 75 blocks, randomly present 50 of them and add a condition branch before each to check against the EDs you generated in the first randomizer. Since you should have 50 true flags or a list of 50 items, the 2nd randomizer will select those 50 out of the 75.