Submit your solutions as a single .sql file

These questions concern the computing products relations. a) Find the model numbers of all of the PCs that share a speed with another PC. b) Find the model numbers of all of the PCs that don't share a speed with another PC. c) Give the model numbers of all of the pairs of PCs that share a hard drive size, along with that hard drive size. Each pair of model numbers should appear in the final list exactly once. In other words, if [1001, 1002, 250] appears in the list, then [1002, 1001, 250] should not. Hint: You may want to think about what condition you could place in the WHERE so that only pairs where the smaller of the model numbers is listed first will appear