Given a set of numbers and numbers and

Let ; =

Similarly,

; = and

; =

Now, consider a subset of C,

The question is to find the minimal cardinality of the subset of A, such that

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# Unnamed Problem -2 (Combinatorics)

Given a set of numbers and numbers and

Let ; =

Similarly,

; = and

; =

Now, consider a subset of C,

The question is to find the minimal cardinality of the subset of A, such that

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