
Progresia Aritmetică/Progresia geometrică
Authored by Simina Gheorghe
Mathematics
9th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
Se consideră progresia aritmetică a2=7 si a3=1.Determinati rația acestei progresii
4
6
-6
12
2.
MULTIPLE CHOICE QUESTION
45 sec • 20 pts
Se consideră o progresie aritmetică cu rația 3 și a1=2. Calculați a6
20
8
-10
17
3.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
Se consideră o progresie aritmetică cu a1=2 și a20=98. Calculați a1+a2+…+a20
1000
100
20
10 000
4.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
Se consideră o progresie aritmetică cu a1=7 și a7=25. Calculați rația
4
3
-3
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
Calculați suma 1+4+7+…+28+31
90
110
240
176
6.
OPEN ENDED QUESTION
1 min • 20 pts
Să se determine primii 2 termeni ai progresiei geometrice,stiind ca b7=16 și q=2
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7.
MULTIPLE CHOICE QUESTION
2 mins • 20 pts
Să se determine Sn a progresiei geometrice știind că b2=32,b3=16 și n=8
255/2
100/2
80/2
120/2
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