In Exercises 35-40, determine whether the first set is a subset of the second set.
35. \( \{\mathrm{a}, \mathrm{b}, \mathrm{c}, \mathrm{d}\} ;\{\mathrm{a}, \mathrm{b}, \mathrm{c}, \mathrm{d}, \mathrm{e}, \mathrm{f}, \mathrm{g}\} \)
36. \( \{3,5,7\} ;\{3,4,5,6\} \)
37. The set of integers; the set of rational numbers
38. The set of real numbers; the set of integers
39. The set of all sandwiches; the set of all hamburgers
40. \( \{2,4,6, \ldots, 5000\} \); the set of even whole numbers
41. A class of 16 students has \( 2^{16} \) subsets. Determine how long (to the nearest hour) it would take you