Consider the following relations: r1 = {(a, b) ∈ r2 ∣ a > b}, the greater than relation r2 = {(a, b) ∈ r2 ∣ a ≥ b}, the greater than or equal to relation r3 = {(a, b) ∈ r2 ∣ a < b}, the less than relation r4 = {(a, b) ∈ r2 ∣ a ≤ b}, the less than or equal to relation r5 = {(a, b) ∈ r2 ∣ a = b}, the equal to relation r6 = {(a, b) ∈ r2 ∣ a ≠ b}, the unequal to relation for these relations on the set of real numbers, find r1 ∪ r3.

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?