In a party attended by 10 persons, each clinch their glass with every other. How many glass clinches?  Choose the correct choice from the following answers
A) 45	B) 52	C) 53	D) 54	E) 55
Total no. of person = 11   Total no. of glass clinches = n(n-1)/2   =10*9/2= 
<gadget id="calculator">10*9/2</gadget>
<output>45</output>
45   45NSWER:45
<result>A</result>
In a party attended by 10 persons, each clinch their glass with every other. How many glass clinches?