MathEnjoy - 9ºano - Intervalos de números reais

MathEnjoy - 9ºano - Intervalos de números reais

9th Grade

15 Qs

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MathEnjoy - 9ºano - Intervalos de números reais

MathEnjoy - 9ºano - Intervalos de números reais

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

Professor Prof

Used 23+ times

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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Considera o conjunto X = [−2,1[ ∩ ℤ , ℤ é o conjunto dos números inteiros relativos.

Qual dos conjuntos seguintes é igual a X ?

{−2, − 1}

{−2, − 1, 0}

{−1, 0, 1}

{−2, − 1, 0, 1}

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual dos conjuntos seguintes é igual ao conjunto ] −1; 2,25 ] ∩ [√ 5; 3[

[2,25; 3[

]-1; 3[

]√ 5; 2,25]

[√ 5; 2,25]

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Considera os intervalos de números reais A = [0, 4[ e B = [3, + ∞[.

Qual dos intervalos seguintes é igual ao conjunto A ∩ B ?

[0, 3]

[0, + ∞[

[3, 4[

]4, +∞[

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual dos conjuntos seguintes é igual ao conjunto ]0,3[ ∪ ]2,5[ ?

]0,5[

]0,2[

]2,3[

]3,5[

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Considera o conjunto A =] − π, −1].

Qual das seguintes afirmações é verdadeira?

−3,15 ∈ A

−π ∈ A

π ∈ A

−3,14 ∈ A

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual dos números seguintes pertence ao conjunto A =] − ∞, 0[ ∪ ]2,3]?

0

1

3

4

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual é o menor número inteiro que pertence ao intervalo [−π,0]?

−4

−π

−3

0

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