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EVERYBODY IN A A ROOM SHAKES HANDS WITH EVERY BODY ELSE.THE TOTAL NUMBER OF HANDSHAKES IS 66.THE TOTAL NUMBER OF PERSONS IN THE ROOM IS? a)11 b)12 c)13 d)14
EVERYBODY IN A A ROOM SHAKES HANDS WITH EVERY BODY ELSE.THE TOTAL NUMBER OF HANDSHAKES IS 66.THE TOTAL NUMBER OF PERSONS IN THE ROOM IS?a)11 b)12 c)13 d)14

```
6 years ago

bharat bajaj
IIT Delhi
122 Points
```							total no of handshakes = nC2 = 66n (n-1) /2 = 66ior n(n-1) = 66*2 = 11*12No. of people = 12ThanksBharat BajajIIT Delhiaskiitians faculty
```
6 years ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions