Discrete Math (Urgent)

Question

Question : Suppose that A and B are finite sets. Prove that A × B is finite.

Book : Set Theory (0th)-Cunningham

Chapter 5.1 and problem number 20 and page no. 116

Answer 1

Proof:

Given that A & B are finite . n1,n2 belongs to N

Let, |A|=n1& |B|=n2

|A×B|=n1×n2; finite n1&n2 are finite.

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