Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Find the total number of 9 digit numbers which have all the digits different
A
B
C
10 !
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
A
There are 10 digits in all viz . 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The required 9 digit numbers = (Total number of 9 digit numbers including those numbers which have 0 at the first place) – (Total number of those 9 digit numbers which have 0 at the first place)
= 
.
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