Maths

Hi i am doing an aptitude test and the book that im practicing off has a question written exactly like this?

From the digits 0, 1, 2, ..., 9 write the largest possible number using four of them. Underneath write the smallest possible four-digit number that can be made with what is left. (You can only use a digit once.) subtract the second number from the first. Your answer is:............

Im wondering if the ... is suppose to be a number you can pick from your choice?

All good peoples i got it!!

its 8850.

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Originally Posted by Spixol123

its 8850.

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I think it's 9876 - 1023 = 8853.

9876-0123= 9753

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Originally Posted by Spixol123

Underneath write the smallest possible four-digit number that can be made with what is left.

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Originally Posted by MatthiasChampagne

9876-0123= 9753

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123 is not a four-digit number.

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Originally Posted by emakarov

123 is not a four-digit number.

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In a computer's memory 01 is not the same as 1.

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Originally Posted by MatthiasChampagne

In a computer's memory 01 is not the same as 1.

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I doubt they are referring to the binary system

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Originally Posted by Krahl

I doubt they are referring to the binary system

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then how about 9876-0.123=9875.877