The number of 5 digited numbers in which no two consecutive digits are identical
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a
92×83
b
9×84
c
95
d
85
answer is C.
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Detailed Solution
first place can be filled with 9 ways excluding 0 2nd place can be filled with 9 ways including 0 excluding first number 3rd 4th 5th places also can be filled with 9×9×9 ways Total number of ways =95 ways