In how many ways Chief Minister and Minister be elected from a team of 20 members?	Choose the correct choice.
A) 128 B) 131 C) 132 D) 380 E) 145
To do this, if captain is elected first, then we have 20 ways of doing this.   For election of vice-captain, we have only 19 ways left, coz 1 way is already consumed. (Situations like this is called dependent situation. One selection depends upon other selection.)   So, the ans is 20*19= 
<gadget id="calculator">20*19</gadget>
<output>380</output>
380 ways.   Answer : 380
<result>D</result>
In how many ways Chief Minister and Minister be elected from a team of 20 members?