Progresii aritmetice și geometrice
Un test de apreciere a cunoștințelor dobândite despre progresii!
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Question 1 of 10
1. Question
1 pointsÎntr-o progresie geometrică, al doilea termen este 10 şi raportul dintre al doilea şi al patrulea termen este 1/25. Să se determine primul termen al progresiei.Correct
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Question 2 of 10
2. Question
1 pointsAflaţi numarul natural x din ecuaţia: 1+4+7+.....+x=925.Correct
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Question 3 of 10
3. Question
1 pointsSumaș Correct
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Question 4 of 10
4. Question
1 pointsPentru o progresie aritmetică dată, suma primilor n termeni este
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Question 5 of 10
5. Question
1 pointsSă se determine produsul primilor cinci termeni ai unei progresii geometrice ştiind că primul termen este egal cu 2 şi raţia este egală cu -1 .Correct
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Question 6 of 10
6. Question
1 pointsCare este cel de al 20-lea termen al şirului 1, 3, 5, 7...?Correct
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Question 7 of 10
7. Question
1 pointsSă se determine termenul al 4-lea al unei progresii geometrice cu raţia 3 şi primul termen 2.Correct
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Question 8 of 10
8. Question
1 pointsSă se determine raţia şi primul termen ale unei progresii aritmetice pentru careș Correct
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Question 9 of 10
9. Question
1 pointsSă se găsească primul termen
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Question 10 of 10
10. Question
1 pointsSă se determine suma primilor 100 de termeni ai unei progresii aritmeticeș Correct
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Examples of questions from "Progresii aritmetice și geometrice"
- Care este cel de al 20-lea termen al şirului 1, 3, 5, 7...?
- Pentru o progresie aritmetică dată, suma primilor n termeni este
- Să se determine raţia şi primul termen ale unei progresii aritmetice pentru care
ș
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