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)Three groups :: x1,x2,x3

A,b common to all three. Then at least 1 element common to 2 ie x1,x2,x2,x3,x3,x1.

Find minimum elements in each group

Read Solution (Total 2)

let x = intersection symbol
we know Axbxc = 2
and axb=1,axc=1,bxc=1 so each contains minimum 4. draw venn diagram to clarify
12 years agoHelpfull: Yes(16) No(11)

ans is 4..
12 years agoHelpfull: Yes(5) No(11)

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