-Answer with explanation-
1.B-The set is set of land vehicles which means that the boat is not a part of it.
2.D-set is a well defined collection of objects if they share a same traits.
3.A-A set without elements is called "empty set" and have this symbol "Ø" it can be subset of any set.
4.A-Roster notation or Roster method is the way of listing or naming each elements in set)
5.D-Verbal description method example (A is set of the first three months in a calendar)
6.D-sigleton set is a lonely set or one set example set A={3} set B={4}
7.A-roster notation list all the elements so its A.
8.B-That symbol is use if the set is a subset of a set. That set is subset to the set so b is the correct answer.
9.D-In set the symbol of U stands for universal set.
10.B-The true about the set is they are joint set. The set is said to be joint if they share atleast 1 same element.
11.D-The set is said to be infinite if it is followed by the three dots which is called ellipsis (...) but if its followed by a number example like this (1,2,3...9) the set is not infinite because it ends in number 9.
12.A-Set A is the proper subset of set M
13.D-Set D is the intersection set of set N
14.C-The elements of set N is in the letter C
15.D-The universal set of set A and set B is letter D.
-Answer only-
1.B
2.D
3.A
4.A
5.D
6.D
7.A
8.B
9.D
10.B
11.D
12.A
13.D
14.C
15.D
