Discrete math

CSC 228 AssignmentI b) Is 041331021641 a valid UPC? The following questions are from Test Bank of Chapter 4. ikeep the 2t number before each question here for checking answers once we need to.) 5. 1. What does a 60-second stop watch read 82 seconds after it reads 27 seconds? 6. 2. What does a 60-second stop watch read 54 seconds before it reads 19 seconds? 7. 21. List all positive integers less than 30 that are relatively prime to 20 8. 72. Convert (1 1101)2 to base 10. 9. 96. Use the Euclidean algorithm to find ged(144, 233) 10. 97. Use the Euclidean algorithm to find ged(203, 101), The numbers in question 130-133 refer to an 8-digit student id at a large university. The eighth digit is a check digit equal to the sum of the first seven digits modulo 7. 11. 130. Find the check digit of the student id starting with 2365 415. 12. 131. Find the check digit of the student id starting with 3179 822 13. 132. Suppose the first digit of the student id X123 4566 is llegible (indicated by X). Can you tell what the first digit has to be? 14. 133. Suppose the first digit of the student id X923 4562 is illegible (indicated by X). Can you tell what the first digit has to be