'Discrete structure of computer science. please show all the steps and answer urgnet. Thaks

Name Surname Date:........ . DISCRETE STRUCTURES OF COMPUTER SCIENCE Examination questions Mandatory requirement: There must be no more than 9 answers. To receive grades 8.9 or 10, there must be answers to questions from each block, including 2 answers from 4th and Sth block ch. The first block (relations) QI (point). Define the lexicographical order which is based on the relation 0