Permutations And Combinations Question 267
Question: Assuming that no two consecutive digits are same, the number of n digit numbers, is [Orissa JEE 2004]
Options:
A) n!
B) 9!
C) $ 9^{n} $
D)  $ n^{9} $
 Correct Answer: AShow Answer
  Answer:
Solution:
 BETA
  BETA 
             
             
           
           
           
          