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There are fifteen people in a conference and all of them shake hands with each other only once at the end of the conference. How many hand shakes will be there altogether? 

This question was previously asked in
UGC NET Paper 1: Held on 22th July 2022 Shift 1
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  1. 210
  2. 105
  3. 90
  4. 225

Answer (Detailed Solution Below)

Option 2 : 105
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UGC NET Paper 1: Held on 21st August 2024 Shift 1
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Detailed Solution

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Given, 

15 Person in a conference and all of them shake hands with each other only once.

Calculation:

Handshake between 2 people.

Total number of Handshake between 15 people = 15C2 = 105

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Last updated on Jun 12, 2025

-> The UGC NET June 2025 exam will be conducted from 25th to 29th June 2025.

-> The UGC-NET exam takes place for 85 subjects, to determine the eligibility for 'Junior Research Fellowship’ and ‘Assistant Professor’ posts, as well as for PhD. admissions.

-> The exam is conducted bi-annually - in June and December cycles.

-> The exam comprises two papers - Paper I and Paper II. Paper I consists of 50 questions and Paper II consists of 100 questions. 

-> The candidates who are preparing for the exam can check the UGC NET Previous Year Papers and UGC NET Test Series to boost their preparations.

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