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Select one or more: i. {1,2,3}∩{4,5,6}={∅}{1,2,3}∩{4,5,6}={∅}   ii. {a,b,c,d}∪{e,c,b}={c,d}{a,b,c,d}∪{e,c,b}={c,d} iii. (A∩B)c=Ac∪Bc(A∩B)c=Ac∪Bc iv.

Select one or more: i. {1,2,3}∩{4,5,6}={∅}{1,2,3}∩{4,5,6}={∅}   ii. {a,b,c,d}∪{e,c,b}={c,d}{a,b,c,d}∪{e,c,b}={c,d} iii. (A∩B)c=Ac∪Bc(A∩B)c=Ac∪Bc iv.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Tick the boxes that apply.

Select one or more:
i.

{1,2,3}∩{4,5,6}={∅}{1,2,3}∩{4,5,6}={∅}  

ii.

{a,b,c,d}∪{e,c,b}={c,d}{a,b,c,d}∪{e,c,b}={c,d}

iii.

(A∩B)c=Ac∪Bc(A∩B)c=Ac∪Bc

iv.

{2,3,4}∩{3,5,7}={2×3}{2,3,4}∩{3,5,7}={2×3}

v.

{n∈N:3n+5=5n−17}={n∈N:n=7+4}{n∈N:3n+5=5n−17}={n∈N:n=7+4}

vi.

A∩Ac={A∩Ac}A∩Ac={A∩Ac}

vii.

{1,2,3}∪{z:z>7}=U{1,2,3}∪{z:z>7}=U 

viii.

{5n:n∈N}∩{7n:n∈N}={35,70,105,140,....}{5n:n∈N}∩{7n:n∈N}={35,70,105,140,....}

 
 
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