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Stelele au luminozitati diferite. Cele mai luminoase sint stelele de gradul 1, iar cele mai putin luimnoase stelele de gradul 6. Luminozitatea a stelelor se micsoreaza de 2,5 ori odata cu trecerea de la un grad la altul. De cite ori sunt mai luminoase stelele de gradul 1,decit stelele de gradul 6?

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The stars have different brightness. The brightest stars are Grade 1 and the least degree luimnoase stars 6. The brightness of the stars shrinks 2.5 times with the passing from one grade to another. Whenever the stars are brighter Grade 1, Grade 6 than the stars?

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