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Solutions
1) First seventeen odd numbers are written from top to bottom. The letters of the word ‘COPYRIGHT’ are written in alphabetical order against each prime number from top to bottom.

2) One letter is between Y and A.
3) Number of letters below A is equal to number of letters above F.
4) Two letters are between F and B.

5) There are two letters between K and E.
6) Number of Letters below K is equal to the number of letters above D.
7) J is placed above L.
Here, our final arrangement will be:

Clearly, there are four vowels i.e. I, O, A and E between the letter against 9 and 31.