restriction of single Alpha entry

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muhaliraza
Posts: 44
Joined: February 1st, 2018, 9:00 am

restriction of single Alpha entry

Post by muhaliraza »

I have a multiple choice question. which have alpha response from A to P and enumerator can select more that one answers. I want a restriction that he/she can only enter each alphabet for one time. for example;
response 1: ADF (accepted)
response 2: ADA (not accepted because he/she enter A two times.

Is there any possible solution for this
josh
Posts: 2399
Joined: May 5th, 2014, 12:49 pm
Location: Washington DC

Re: restriction of single Alpha entry

Post by josh »

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