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If A is a subset of B then _______

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If A is a subset of B then _______

(a) The cardinality of A is greater than B

(b) The cardinality of B is greater than A

(c) Can’t say

(d) None of the mentioned

I have been asked this question in class test.

Enquiry is from Cardinality of Sets in division Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

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The correct choice is (b) The cardinality of B is greater than A

The explanation: B contains all the elements of A, as well as other elements.

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