please answer this questions

1. What random numbers are generated by the following expression? 10 + 5 *(rand() % 3)
2. What random numbers are generated by the following expression? rand() % (MAX - MIN + 1) + MIN
3. Challenging problem: A file contains N distinct numbers within the range 0 to N inclusive. Find the missing number.
   • Example: Assume the file has the following numbers: 3, 0, 1, 5, 4. For this file, N is 5 and the missing number is 2.
   • Requirement: Design an algorithm to solve this problem in an effective way. Describe the algorithm in your own words (like a "to do list"). Writing code is OK but it is not required.