Intervale de numere reale

Intervale de numere reale

8th Grade

20 Qs

quiz-placeholder

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Intervale de numere reale

Intervale de numere reale

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

Diana Stanciu

Used 70+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Intervalul

 (; 5)\left(-\infty;\ 5\right)  este:

Interval nemărginit la dreapta și descis la stanga

Interval mărginit

Interval nemărginit la stânga și închis la dreapta

Interval nemărginit la stânga și deschis la dreapta

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Intervalul

 [3; 7]\left[-3;\ 7\right]  este

Interval deschis

Interval închis

Interval nemărginit 

Interval încis la stânga și deschis la dreapta

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Propoziția „ 5 ∈ (−5; 5) '' este

Adevărată

Falsă

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Mulțimea A = {x∈R / −6 ≤ x ≤ 5} se scrie ca interval...

(− 6; 5)

[− 6; 5)

(− 6; 5]

[− 6; 5]

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Mulțimea B = {x∈R / −8 ≤ x < 5} se scrie ca interval...

(− 8; 5)

[− 8; 5)

(− 8; 5]

[− 8; 5]

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Intervalul [ − 7; 6) se scrie ca mulțime de numere reale astfel:

{x ∈ R / −7 ≤ x ≤ 6}

{x ∈ R / −7 < x ≤ 6}

{x ∈ R / −7 ≤ x < 6}

{x ∈ R / −7 < x < 6}

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mulțimea B = {x∈R / −8 ≤ x + 3 < 5} se scrie ca interval...

(− 11; 5)

[− 11; 2)

(− 8; 2]

[− 11; 5]

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