Let A, B and C be sets. Prove that if B- A CC-A then AUBCAUC.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.3: Divisibility
Problem 27E: Let a be an integer. Prove that 3|a(a+1)(a+2). (Hint: Consider three cases.)
icon
Related questions
Question
1. a) Let A, B and C be sets. Prove that if B - ACC- A then
AUBCAUC.
b) Prove that for every integer n > 3,
(1-)(-) (-)-
(n + 1)(n + 2)
6n(n – 1)
Transcribed Image Text:1. a) Let A, B and C be sets. Prove that if B - ACC- A then AUBCAUC. b) Prove that for every integer n > 3, (1-)(-) (-)- (n + 1)(n + 2) 6n(n – 1)
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer