Restrict choice list in repeat select_one question

Hi there,
I need help
I will like to know how to restrict choice list on a select_one or even select_multiple question that is looped in a repeat.
for example if I have a repeat on time
select_one
6-7
7-8
8-9
9-10......
I want to make it possible not to be able to select 6-7 for example if it has already been selected previously

Thanks you

For single select it is possible to restrict duplicate selection in repeat group. Have a look the discussion:

Thanks @ARIF_AZAD_KHAN,

It is crazy how programming these forms can get exciting over time. It worked for me.

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