
Progresii aritmetice
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Crista Alexandra
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este rația unei progresii aritmetice?
R = An - An-1
R = An + An-1
R = An + An+1
R = An-1 + R
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Formula termenului general este:
N = A + 1
An = A1 + (n - 1) * R
An = A1 - (n + 1) : R
An = 0
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Daca suma primelor n termeni ai unei progresii aritmetice
Sn = A1+ A2 + .... + An = [(A1 + An) * n] : 2 atunci
An - primul termen
An - nr de termeni
n - ultimul termen
n - nr. de termeni
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este al cincilea termen din progresia aritmetică: 2, 5, 8, 11, ... ?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este rația în progresia aritmetică: 3, 6, 9, 12, ... ?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este al 15-lea termen al progresiei aritmetice: 2, 6, 10, 14, ...?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este al 15-lea termen al progresiei aritmetice: 2, 6, 10, 14, ...?
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