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How many whole numbers between 200 and 699 have no digits repeated within?
Wiki User
∙ 11y ago
They are all three digit numbers between 200 and 699.
The first digit can be one of 2, 3, 4, 5, 6, a selection of 5.
The second digit can be any of the ten digits (0-9) that have not been already picked, namely one of a selection of the remaining 9.
The third digit can be any of the ten digits than have not yet been picked, namely one of a selection of the remaining 8.
So there are 5 x 9 x 8 = 360 numbers with no repeated digits between 200 and 699.
Wiki User
∙ 11y ago
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How many such digits are there in the number 58674139 each of which is as far away from the beginning of the number as when the digits within the number are rearranged in descending order?
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