In a room are five chairs to accommodate 3 people. One person to a chair. How many seating arrangements are possible?
Answers:
A) 45  B) 60  C) 72  D) 90  E) 120
The first person has 5 options i.e. 5 chairs to choose from   The second person has 4 options i.e. 4 chairs to choose from (first one has already taken a chair)   The third person has 3 options i.e. 3 chairs to choose from (two chairs are already gone)   Total seating arrangements 5*4*3= 
<gadget id="calculator">5*4*3</gadget>
<output>60</output>
60   ANS:60
<result>B</result>
In a room are five chairs to accommodate 3 people. One person to a chair. How many seating arrangements are possible?