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Sagot :

Bonjour,

1) 25 × 27 = 5 × 5 × 3 × 3 × 3

  72 × 75 = 2 × 2 × 2 × 3 × 3 × 3 × 5 × 5

2) (25×27)/(72×75) = 1/(2×2×2) = 1/8 = 0,125

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