Questions

1. What is the difference between the transfer and send functions available on the address data type?
2. Why is transfer preferred over the send function call?
3. When should you use the delegatecall function?
4. How can you calculate the gas units to be set when doing transaction gas adjustments?
5. How can you generate a random number in Solidity?
6. What is the difference between the abi.encode and abi.encodePacked functions?
7. What is the difference between the assert, revert, and require functions?