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Algebra

number of 9 digit numbers divisible by 9 formed by using the digits from 0to9, if each digit used atmost is k*8!. what is the value of k?

Profile image of nishi chandra
13 Years agoGrade
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1 Answer

Profile image of Vaishal Shah
ApprovedApproved Tutor Answer13 Years ago

The no. is divisible by 9 only if the sum of digits is multiple of 9.

987654321 - 9!

87654321 - 8*8!

Total no.=17*8!

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