Twenty-seven persons attended a party . Which one of the following statements can never be true ?
ক) There is a person in the party who is acquainted with all the twenty-six others .
খ) Each person in the party has a different number of acquaintances
গ) There is a person in the party who has an odd number of acquaintances
ঘ) In the party, there is no set of three mutual acquaintances .
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ক) 33
খ) 31
গ) 27
ঘ) 37
ক) 8
খ) 12
গ) 18
ঘ) 140
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