{1,2,3,4,5,5,6,6}how many four digited numbers can be formed without repiting the numbers?  Choose the correct choice from the following choices.
A) 180
B) 360
C) 460
D) 500
E) 520
n*(n-1)*(n-2)...   hence four digits with out repetition total 6 digits=n   6*5*4*3= 
<gadget id="calculator">6*5*4*3</gadget>
<output>360</output>
360   ANSWER:360
<result>B</result>
{1,2,3,4,5,5,6,6}how many four digited numbers can be formed without repiting the numbers?