Group w form groups 2. determine the value of the following: exert additive inverse of 6 mod 10 b. multiplicative inverse of 5 mod 11 design a fo c. multiplicative inverse of 6 mod 15 3. in a 12-hour clock, determine the time for you to 10 in isba same mod the assig entire cla a. 55 hours after 7 o'clock b. 25 hours before 2 o'clock 4. in exactly 125 days, the country will commemorate labor day (may 1). a. if today is tuesday, what day of the week is labor day? b. what day will labor day be after 10 years? assignme what day was labor day 10 years ago! for numbers 5 and 6, determine whether the given isbn code is valid or not. if the code watch th the i not valid, give 5. 978-971 -98-0456- 6 correct check digit. http: 6. 978-013-14-3747- 1 for numbers 7 and 8, determine whether the given upc number is valid or not. if the number is not valid, give the correct check digit. 1. thr 7. 3-8137 - 115208-7 ldog d dos ot ane sd sbiron 8. 000-396-01593 - 6 n1qo alubom giwollo o 0uis for numbers 9 and 10, determine whether the given credit card number is valid or not. 1 bom (a+ta 9. 3-8137- 115208-7 bom (se-c 10. 000-396-01593- 6 bom (seei vimathematics in the modern