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Question

Write the smallest 5-digit number that can be formed using 8, 9, 5, 7 and 1 without repetition.

A
98751
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B
89751
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C
51789
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D
15789
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Solution

The correct option is D 15789

The smallest number has the leftmost digit of least value and rightmost digit of highest value.
1 < 5 < 7 < 8 < 9,
Hence the smallest number is 15789.


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