TEST TEMA 1 ȘIRURI (PROGRESII ARITMETICDE ȘI PROGRESII GEOMETRICE)
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Question 1 of 10
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2. Dacă numerele sunt, în această ordine, în progresie aritmetică, atunci numărul este egal cu:
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4. Dacă numerele x,8,15,y,z, sunt în această ordine, în progresie aritmetică, atunci numărul z este egal cu:
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Question 8 of 10
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8. Termenul necunoscut al progresiei geometrice cu termeni pozitivi, 4,40,a,…, este:
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Question 10 of 10
10. Question
10. Dacă numerele x-1,x+1,2x+5 sunt termeni pozitivi ai unei progresii geometrice, atunci x este egal cu:
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