
test matematica progresii
Quiz
•
Mathematics
•
1st Grade
•
Practice Problem
•
Easy
Iulia Bocioaca
Used 3+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Al nouălea termen al șirului 2, 5, 8, …. este
30
27
40
26
Answer explanation
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dacă numerele 5, x şi 180 sunt termeni consecutivi
ai unei progresii geometrice cu termeni pozitivi,, atunci x este...
30
27
40
55
Answer explanation
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Se consideră o progresie aritmetică cu a1=2 și a20=98. Calculați a1+a2+…+a20
1000
50
100
200
Answer explanation
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Aflați al 5-lea termen al unei progresii aritmetice dacă a2=32,a6=24.
26
20
32
21
Answer explanation
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Primii cinci termeni ai progresiei geometrice cu primul termen b1=−1 și rația q=2
1,2,4,8,16
−1 −2 −4 −8 −16
2,4,6,8,10
1,2,3,4,5
Answer explanation
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Să se determine primul termen al progresiei geometrice (bn) știind că b7=16 și q=2.
1/4
1/3
1
18
Answer explanation
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Să se calculeze suma S=1+5+9+...+2013
S=252 · 2014
S=2013·2013
S=2013·2013
S=2013·2014
Answer explanation
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