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Subject :IMO    Class : Class 7

Study the set of numbers given below and answer the question which follow:
427 581 839 275 589
If two is subtracted from the first digit of each of the numbers and then the first and the third digits are interchanged, which of the following will be the lowest?

A 427
B 581
C 839
D 275

answer should not be B. Should it?

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