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Rasek [7]
3 years ago
13

Help pls and explain!!

Mathematics
2 answers:
Nana76 [90]3 years ago
6 0

Answer:

15 minutes is your answers

cricket20 [7]3 years ago
3 0

Answer: 15 minutes

Step-by-step explanation:

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Let sets A and B be defined as follows.
VashaNatasha [74]
<h3>Given</h3>

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<h3>(a) </h3>

<em />

<em>Cardinality means the number of elements in the set.</em>

Cardinality of the set A:

n(A) = 6, since we can count 6 elements.

Set B has even numbers between 6 and 20, both included:

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Then its cardinality is:

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<h3>(b) </h3>

To solve this we need to compare the elements of sets A or B with numbers given:

  • -22 ∈ A, True       ⇒  -22 is listed as element of A
  • 6 ∈ B, True          ⇒  6 is listed as element of B
  • - 21 ∉ A, False     ⇒  - 21 is listed as element of A
  • 2 ∈ B, False         ⇒  2 is not listed as element of B
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2 years ago
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Step-by-step explanation:

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