If | A| = 2 and |B| = 6, what is |AU B|+|An B?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:If |A| = 2 and |B| = 6, what is |AU B|+|An B|?

Transcribed Image Text:Let A = {1, 2, 3, 4, 5, 6, 7, 8, 9}.
a. How many subsets of A are there? That is, find |P(A)|.
b. How many subsets of A contain exactly 5 elements?
c. How many subsets of A contain only even numbers?
d. How many subsets of A contain an even number of elements?
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