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QUESTION SET
QS
How many six digit numbers can be formed using the digits 0, 2, 4, 6, 8, 5, 7 and 3 under the following conditions
Q

Solution

There are eight options available to fill six places(in a six digit number) Since the six digit numbers should be divisible by 5 the units digit can be filled by either 5 or 0 Case (I) : Units digit is 5 The remaining 5 places need to be fiiled using the available 7 options The first place can be filled in 6 ways as 0 cannot be the first number. Since repetition is not allowed remaining places can be filled in 6, 5, 4 and 3 ways respectively Hence the...

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