This is Math in the Modern World. Kindly write the answer on a piece of paper for us to easily understand thankyou

GTqOOU D' O19/ DILLEBEILIVI CV MODULE 7. ASSESSMENT TASKS Provide the answer to each of the following problem. 1. Evaluate the following modular operations: a. (27 + 34) mod 8 b. (43-18) mod 7 c. (18)(27) mod 10 2. Determine whether each of the following congruence is true a. 33 = 8 mod 5 b. 26 = 4 mod 7 c. 12 = -33 mod 15 3. In a 12-hour clock, determine the time a. 7 hours after 4 o'clock b. 25 hours before 2 o'clock 4. Determine the value of the following a. Additive inverse of 7 mod 15 b. Additive inverse of 1 1 mod 17 c. Multiplicative inverse of 5 mod 7 d. Multiplicative inverse of 7 mod 11 5. The "Independence Day" of the Republic of the Philippines was declared on June 12, 1898. What day of the week was it declared? 6. Robert was born on April 29, 1980. What day of the week was he born? 7. Determine the ISBN check digit for the book How Mathematicians Think by Byers, William (2007). The first 12-digits of the ISBN are 978-0-691-12738 - ? 8. Verify if the ISBN 978-0-760-73261-6 is valid. 9. Verify if the given credit number 5234-8213-3410-1496 is valid. 10. Is 6011-0123-9541-2713 a valid credit card