Progresii aritmetice

Progresii aritmetice

9th Grade

10 Qs

quiz-placeholder

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Progresii aritmetice

Progresii aritmetice

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

Created by

Crista Alexandra

Used 1+ times

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10 questions

Show all answers

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, ... ?

23
20
17
14

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Care este rația în progresia aritmetică: 3, 6, 9, 12, ... ?

3
7
5
4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Care este al 15-lea termen al progresiei aritmetice: 2, 6, 10, 14, ...?

30
58
25
20

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Care este al 15-lea termen al progresiei aritmetice: 2, 6, 10, 14, ...?

30
58
25
20

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