A) 90
B) 105
C) 110
D) 115
Correct Answer: B
Solution :
First person shakes his hand remaining 14 persons. Second person shakes his hand remaming 13 persons. Similarly, third person shakes his hand remaining 12 persons. Hence, total number of shake hands \[=14+13+12+11+...+1\] \[=\frac{14(14+1)}{2}\] \[=7\times 15=105\]You need to login to perform this action.
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