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A = {0, 3, 1, 1.3, 2, 3, 4, 5, 2}

B = the set of all Natural numbers
C= the set of all Rational numbers

A ∩ C =
A ∩ B=

1 Answer

3 votes

Answer:

A ∩ C = {0, 3, 1, 1.3, 2, 3, 4, 5, 2}

A ∩ B = {3, 1, 2, 4, 5}

Explanation:

Given that A = {0, 3, 1, 1.3, 2, 3, 4, 5, 2}

B = the set of all Natural numbers

C= the set of all Rational numbers

So set C contains numbers that can be expressed as the ratio of two integers. Since numbers in A can be expressed as follows:

0 = 0/1, 3 = 3/1, 1 = 1/1, 1.3 = 13/10, 2 = 2/1, 4 = 4/1, 5 = 5/1

Then, A ∩ C = {0, 3, 1, 1.3, 2, 3, 4, 5, 2}.

A ∩ B = {3, 1, 2, 4, 5}, since B contains only Natural numbers = {1, 2, 3, ...}.

User Jcolino
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