Discrete Mathematics Answers

which of the following statements are true? justify your answers i) the contrapositive of "not a ⇒ not b' is "a&b', where a and b are two statements. ii) any set can be represented by the listing method

Find the domain and range of this functions

a) The function that assigns to each pair of positive integer the maximum of these two integers

b) The function that assigns to each positive integer the number of the digits 0,1,2,3,4,5,6,7,8,9 that do not appear as decimal digits of the integer.

Construct a relation on the set {a, b, c, d} that is a. reflexive, symmetric, but not transitive

Construct the network who's activity and the relationship

Activity:A<C,D;B<E;C,E<F,G;D<H;G<I;H,I<J.

Construct the network who's activity and the relationship

Activity:A,C,D can start simultaneously

Activity:E>B,C;F,G>D;H,I>E,F;J>I,G;K>H;B>A

What and Define activity in mathematical foundations of computer science

What and Define project in mathematical foundations of computer science

What and Define scheduling by PERT and CPM in mathematical foundations of computer science

Construct the network who's activity and the relationship

Activity:A,D,E can start simultaneously

Activity:B,C>A;G,F>D,C;H>E,F

Given The Following 2 Premises,

1. 𝑝→(𝑞∨𝑟)

2. 𝑞→𝑠

Prove 𝑝→(𝑟∨𝑠) Is Valid Using The Proof By Contradiction Method.

[Hint: Use A Combination Of Equivalence Laws And Rules Of Inference To Solve This Question]