My thousands digit is three times my hundreds digit.The sum of my tens digit and one digit is one less than my thousands digit.M
1 answer:
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Solution:
The permutation formula is expressed as
The combination formula is expressed as
where
Given that 6 objects are taken at a time from 8, this implies that
Thus,
Number of permuations:
Number of combinations:
Hence, there are 28 combinations and 20160 permutations.