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Counting just positive numbers, we have all numbers from 100000 to 999999, the difference is 899,999, but because we count both the starting and ending number, we have to add 1 to this, which makes it 900,000 numbers. Of course if you want to include also negative numbers that makes it 1,800,000. And because we want only EVEN numbers these totals would be divided by 2, so there are 450,000 positive, even, 6 digit numbers and 450,000 negative, even, 6 digit numbers. Total is 900,000. This is considering whole numbers only. If we include ALL numbers than we would also have to count the six digit numbers between 1 and -1... such as .000002 through .999998 thereby doubling again the total to 1.8 million.
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When The pages of a book are numbered from 1 to 128 How many page numbers contain the digit 6?
The pages of a book are numbered from 1 to 128. How many page numbers contain the digit 6?
How many even 3-digit numbers can be formed from the digits 1 2 3 and 5 if each digit can be used only once?
The final digit must be a 2 to form an even number. The first digit may be any of three remaining digits (1, 3, 5) while the second digit may be any of the two remaining digits. All together, that makes 3*2 = 6 distinct even numbers.
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.
How many 3 digit numbers from 456789?
If the same digit can be used more than once: 6 x 6 x 6 = 216 of them. If each digit can be used only once: 6 x 5 x 4 = 120 of them.
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.
