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Hello Team,

I’m looking for a solution to the following issue:In the first multiple-answer question, respondents select the products they use: A, B, C, D, E, and F. Based on their selections, they are then asked detailed follow-up questions grouped by each product (groups A to F).However, I need to limit the number of follow-up groups shown for products A to D. Specifically:

• If a respondent selects one or two products from A, B, C, or D, they should see the corresponding one or two follow-up groups.
• If they select three or four products from A–D, they should be shown only two of these follow-up groups (randomly).
• All respondents who select E and/or F should always see the corresponding follow-up groups E and/or F.

I'll be grateful for you help.Thank you!

Hi,
here my usual solution without javascript.
Create an equation and a "container" (C), a question of type "multiple short text" 

In the equation enter the following:

• Fill B1 (something like "Base1") with characters referring to the selected subquestions
  {C_B1=join(if(Q01_1=="Y","A",""),if(Q01_2=="Y","B",""),if(Q01_3=="Y","C",""),if(Q01_4=="Y","D",""))}
• Generate a random number (1 - length of this string)
  {C_R1=rand(1,strlen(C_B1))}
• Store the character at this place
  {C_S1=substr(C_B1,C_R1-1,1)}
• Remove the selected character to get the new base
  {C_B2=str_replace(C_S1,"",C_B1)}
• Generate a random number (1 - length of this string)
  {C_R2=rand(1,strlen(C_B2))}
• Store the character at this place
  {C_S2=substr(C_B2,C_R2-1,1)}
• Join both selected characters  and the characters that refer to E and F
  {C_tot=join('#',C_S1,C_S2,if(Q01_5=="Y","E",""),if(Q01_6=="Y","F",""))}

Now you display the following groups if the total string containds the character
strpos(C_tot,"A")>0

The survey:
 

Joffm