Math 105, Quiz 1
Almajmaah Engineering College
King Saud University
Math 105
18/11/1430
Name:
Group: 1
Academic Number:
Level 2
Time: 30 min.
Quiz (1)
1. If A = {3,4,6,7} , B = {4,5,6} , C = {1,3,5}. Find:
a) A∩C
b) AUB
c) (AUB) ∩C
2. Find the set of solutions (represented as intervals) for each of the
following inequalities. Then explain you answer graphically.
a) 7x – 1 ≤ 10x + 4
b) (x+1)(x-1)(x-3) ≤0
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Math 105, Quiz 1
c) |2𝑥 − 5| ≥ |𝑥 + 4|
3. Proof that the following points (-4,-2), (-2, 3), (3, 1), (1,-4) representing
vertices of a square.
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