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The figure above shows an example of a 4-digit customer identification

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Carcass
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The figure above shows an example of a 4-digit customer identification [#permalink] New post   03 Dec 2021, 06:31
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The figure above shows an example of a 4-digit customer identification code. If the digits in the code must appear in descending numerical order and no digit can be used more than once, what is the difference between largest and smallest possible codes?

A. 6666
B. 5555
C. 5432
D. 4444
E. 1111
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A
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GreenlightTestPrep
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Re: The figure above shows an example of a 4-digit customer identification [#permalink] New post   03 Dec 2021, 06:43
Carcass wrote:
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The figure above shows an example of a 4-digit customer identification code. If the digits in the code must appear in descending numerical order and no digit can be used more than once, what is the difference between largest and smallest possible codes?

A. 6666
B. 5555
C. 5432
D. 4444
E. 1111


9876 is the biggest code that meets the given conditions
3210 is the smallest code that meets the given conditions

Difference = 9876 - 3210 = 6666

Answer: A
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gaich
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Re: The figure above shows an example of a 4-digit customer identification [#permalink] New post   23 Jun 2023, 23:59
the solution is provided I don't agree with it.

It should be, 9876-1023=8851.

The answer is not in the list, kindly check and explain.
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The figure above shows an example of a 4-digit customer identification [#permalink] New post   24 Jun 2023, 00:58
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The figure above shows an example of a 4-digit customer identification code. If the digits in the code must appear in descending numerical order and no digit can be used more than once, what is the difference between largest and smallest possible codes?

1023 is NOT in descending numerical order

I hope this helps

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The figure above shows an example of a 4-digit customer identification [#permalink]
24 Jun 2023, 00:58
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