Discrete Mathematics

2. THESE ARE WHICH KIND OF NUMBER?:1,2,3,4....
5. The .... of R, denoted by R^-1.
8. propositions P (p, q, . . .) and Q(p, q, . . .) are said to be logically ....
9. Any well-defined collection of objects, called the elements or members of the set.
11. Any two propositions can be combined by the word “and” to form a compound proposition called the of the original propositions.
12. Many statements, particularly in mathematics, are of the form “If p then q.” Such statements are called ..... statements
13. which quantifier means that “there exists”.
14. A .... diegram is a pictorial representation of sets in which sets are represented by enclosed areas in the plane.
15. which quantifier means that 'for every' or 'for all'.

1. A ....(or statement) is a declarative statement which is true or false, but not both.
3. consider a nonempty set S. A relation R on S is an ....relation if R is reflexive, symmetric, and transitive.
4. Any two propositions can be combined by the word “or” to form a compound proposition called the .... of the original propositions.
6. Suppose that to each element of a set A we assign a unique element of a set B; the collection of such assignments is called a .... from A into B.
7. Two sets A and B are said to be .... if they have no elements in common.
10. set that,all sets under investigation in any application of set theory are belong to some fixed large set called the .... which we denote by