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Using each of 7 different digits at most once, the greatest 7-digit number is:

A98,76,543
B98,67,543
C99,87,654
D97,86,543
Answer & Solution
Correct answer: A. 98,76,543
Place the largest digits first: 9, 8, 7, 6, 5, 4, 3 gives 98,76,543.
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