Progresii aritmetice

Progresii aritmetice

9th - 10th Grade

7 Qs

quiz-placeholder

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Progresii aritmetice

Progresii aritmetice

Assessment

Quiz

Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Angela Dobrea

Used 136+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Să se determine termenul de rang 6 al progresiei aritmetice

 (an)n1\left(a_n\right)_{n\ge1}  : -5, -1,3,7,........

11

15

14

19

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Se consideră progresia aritmetică

 (an)n1\left(a_n\right)_{n\ge1}  în care  a1=1a_1=1  și r=3. Termenul  a7a_7  este egal cu:

16

10

19

22

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Se consideră progresia aritmerică  \left(a_n\right)_{n\ge1}  în care  a15=29a_{15}=29  și  r=2r=2  . Valoarea termenului  a1a_1  este:

-4

3

6

1

4.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Se consideră progresia aritmetică  (an)n1\left(a_n\right)_{n\ge1}  în care  a3=11a_3=11  și  a7=3a_7=3  . Valoarea termenului  a11a_{11}  este:

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Fie progresia aritmetică  (an)n1\left(a_n\right)_{n\ge1} în care  a3+a19=10a_3+a_{19}=10  . Valoarea sumei  a6+a16a_6+a_{16}   este:

20

10

5

25

6.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Suma 1+4+7+....+100 este:

1717

1721

1470

1680

7.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Se consideră progresia aritmetică

 (an)n1\left(a_n\right)_{n\ge1}  în care  a2=3a_2=-3  și  a4=1a_4=1  . Suma primilor 10 termeni este:

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