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NIMCET 2008 Question Paper with solutions

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Question : 34

Total: 120

Suppose P1,P2,...,P30 are thirty sets each having 5 elements and a1,a2,...,an are n sets with 3 elements each. Let

Qj=S and each element of S betongs to exactly 10 of the Pis and exactly 9 of the Qjs. Then n is equal to

15
3
45
None of these

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