Question: How do I choose specific numbers from list of numbers

Hello everyone.

I want to  choose the  numbers among the list A which are for example congruent to 1 mod 3

A = {3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101}

Please Wait...