Question

If the numbers from 1 to 100 which are divisable by 2 are are arranged

Answer 1

Numbers that are divisible by 2 but not by 4 all share the following property: 2*(2*k+1), where k is a positive integer. => 4k+2. 

2. Numbers that are divisible by 5 but are not divisible by 2 nor 4, are odd positive integers ending in 5, with the general structure 5*(2*k+1).  

3. Numbers with the structure 2*k+1 are odd numbers. This means that you need to add 2 strings, one which consists of odd numbers * 2, and one which consists of odd numbers * 5. 

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