Find the number of ways in which 5 different beads can be arranged to form a necklace.  Select:
A) 30  B) 20  C) 12  D) 60  E) 80
Since in forming a necklace clockwise and anticlockwise arrangements are not different, therefore,5 beads can be arranged to form a necklace in(5-1)! /2ways   = 4*3*2/2= 
<gadget id="calculator">4*3*2/2</gadget>
<output>12</output>
12 ways   Answer is 12
<result>C</result>
Find the number of ways in which 5 different beads can be arranged to form a necklace.