[object Object] Please help us help you and fill where relevant:
LimeSurvey version: 
Own server or LimeSurvey Cloud:+6
Survey theme/template:
==================
Hi,
I have a single choice(Q1) question type. I need to display  2nd question(Q2) when 1 to 5 options are selected in the Q1 and display Q3 when option 6 to 10 options are selected in Q1.

regards,

Please do not double (or in your case triple) post. As a new user your post needs to be approved by a moderator first. I will delete the other 2 posts in the queue.

You need to either use conditions or relevance equation.

Conditions allow you to click things together, but it is outdated and very limited and takes longer.

I highly recommend to have a look at the expression manager section of the manual. Looks overwhelming at the beginning, but it is actually quite simple. And totally worth it. Because you increase the possibilities you have with Limesurvey immensely. If you can write Excel formulas, you can write Expression Script.

In your case for example, you could write something like this into the "relevance equation" of Q2:

What does this mean? I means Q2 is shown if Q1 is smaller than six (so 1-5).

For Q3 you can use something like:

But don't just copy and paste this into your survey, but have a look at the manual about expression manager, because there is o much more you can do with expression manager/script.