Timer
00:00
Answers
A
B
C
D
E
Stats
Difficulty—
At a gathering of \(30\) people, there are \(20\) people who all know each other and \(10\) people who know no one. People who know each other hug, and people who do not know each other shake hands. How many handshakes occur within the group?
A. \(240\)
B. \(245\)
C. \(290\)
D. \(480\)
E. \(490\)
The OA is B
A. \(240\)
B. \(245\)
C. \(290\)
D. \(480\)
E. \(490\)
The OA is B
