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UPPSC Prelims 2025CSATQ. 59 of 248
Q. 591 markMedium
UPPSC Prelims 2025·CSAT
Eleven friends meet at a party. Each one shakes hand with each of the others once. The number of possible hand shakes is
(a)65
(b)22
(c)55
(d)56
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Eleven friends meet at a party. Each one shakes hand with each of the others once. The number of possible hand shakes is