SOLUTION: Consider the number 1,3,4,5,6,7,8 and 9, how many 4 digit number can be formed from these numbers, such that
A. They are all odd?
B. They are all even?
C. They are greater t
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Question 1188430: Consider the number 1,3,4,5,6,7,8 and 9, how many 4 digit number can be formed from these numbers, such that
A. They are all odd?
B. They are all even?
C. They are greater than 6000?
Answer by ikleyn(52835) (Show Source): You can put this solution on YOUR website!
.
Correctly formulated problem of this kind must indicate,
whether the repetition of digits is allowed or not.
When a problem arrives with no such indication,
it makes it clear that its creator is mathematically illiterate person.
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