How many 6-digit numbers can be formed from the digits 0,3,5,7 and 9 w – InterviewSolution

1.	How many 6-digit numbers can be formed from the digits 0,3,5,7 and 9 which are divisible by 10 and no digits is repeated?
Answer» Since numbers are divisible by 10, so there will always be 0 at unit place. No. of ways of placing remaining 5 digits at 5 places `= .^(5)P_(5) = 5! = 120` Total numbers `= 120`

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