Given below are the codes for the digits/symbols. Study the conditions given below and answer the questions that follow.
1. If both the first and last elements are composite, then interchange their codes.
2. If the second element is an odd digit and the fifth element is a symbol, then code both of them with the code of the fifth element.
3. If the first element is a perfect cube and the second last element is a symbol, then code both of them as Q
4. If the fourth element is an even prime and the last element is an odd prime, then code both of them as X.
- None of these