What makes this number unique — 8,549,176,320? Hint: You are all thinking too hard. Think of the numbers in word form. Catherine has it. The numbers are in alphabetical order when written out in word form.
It's not the highest number that uses all digits with none repeating. That would be 9,876,543,210.
Nor does it qualify as "unique" by using all digits with none repeating. Discounting numbers where the first digit is zero (because human beings generally disregard those digits), there are 322,560 such numbers. If the first digit is allowed to be zero, there are 362,880 such numbers.
6 comments:
Highest number without a repeating number.
It uses all the numbers 0-9 only once with no number being repeated.
It's not the highest number that uses all digits with none repeating. That would be 9,876,543,210.
Nor does it qualify as "unique" by using all digits with none repeating. Discounting numbers where the first digit is zero (because human beings generally disregard those digits), there are 322,560 such numbers. If the first digit is allowed to be zero, there are 362,880 such numbers.
Think of the numbers as words.
The numbers are in alphabetical order.
That is correct. Can you solve the one here http://rockthejourney01.blogspot.com/
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