Question 1174681
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There are   {{{10^3}}} = 1000  ways,  if repeating is allowed.



There are   10*9*8  ways,  if repeating is not allowed,  but the order does matter.



There are   {{{(10*9*8)/(1*2*3)}}}  ways,  if repeating is not allowed,  but the order does not matter.



To get a unique correct answer,  the  QUESTION  must be posed  PROPERLY.