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How many four digit whole numbers are there such that the thousand digit is odd the hundreds digit is even and all four digits are different?
5*5*4*4 = 400
The thousands digit of a 4-digit number is 4 greater than the hundreds digit The tens digit is 2 times the Thousands digit The ones digit is one-half the thousands digit What is the number?
4082 Since the tens digit is 2 times the thousand digit, it must be an even digit. So it can be 8, 6, 4, or 2. But, the thousands digit is 4 greater than the hundred digit. So that the hundred digit must be 0, the thousands digit must be 4, the hundreds digit must be 8, and the ones digit must be 2.
How many 3-digit numbers can made using the digits 2 3 4?
If you can repeat a digit, there are 27. If you can't repeat a digit, there are only 6.
What is the greatest possible product of a 4 digit number and a 3 digit number?
9999 is the 4-digit number and 999 is the 3-digit number.
How many three digit numbers can be formed out of 1234 if a digit can not be repeated?
Any 3 out of 4 = 4. Each set can be arranged 6 ways so 24 different numbers.
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