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17 April, 07:50

Given the three digits 2, 4 and 7, how many different positive two-digit integers can be formed using these digits if a digit may not be repeated in an integer?

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Answers (2)
  1. 17 April, 07:52
    0
    It is 6, 24,42,27,72,27,74
  2. 17 April, 08:09
    0
    (2,4) (2,7) (4,2) (4,7) (7,2) (7,4)
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