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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

Twenty-seven persons attended a party . Which one of the following statements can never be true ?

A. There is a person in the party who is acquainted with all the twenty-six others .
B. Each person in the party has a different number of acquaintances
C. There is a person in the party who has an odd number of acquaintances
D. In the party, there is no set of three mutual acquaintances .
সঠিক উত্তরঃ B. Each person in the party has a different number of acquaintances
Explanation: