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

There is a person in the party who is acquainted with all the twenty -six others.

Each person in the party has a different number of acquaintances.

There is a person in the party who has an odd number of acquaintances

In the party, there is no set of three mutual acquaintances.

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

ব্যাখ্যা ও সঠিক সমাধান

উত্তর: There is a person in the party who is acquainted with all the twenty -six others.

বিস্তারিত সমাধান