
Întrebări despre mulțimi
Authored by Matica Dan
Mathematics
8th Grade
Used 25+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Fie A={x∈ℕ|x<5}. Care dintre următoarele numere aparține lui A:
4
5
-2
5.5
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Dacă B={x∈ℤ|-3≤x≤2}, atunci cardinalul mulțimii B este:
5
6
7
infinit
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Fie C={x∈ℕ|x este par și x<10}. Care este reprezentarea grafică a mulțimii C pe o axă numerică?
Punctele la 1,3,5,7
Punctele la 2,4,6,8
Un segment de dreaptă între 0 și 10
Toată axa numerică
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Fie A={x∈ℤ|x²≤9}. Care dintre următoarele mulțimi este egală cu A:
{-3,-2,-1,0,1,2,3}
{-9,-8,-7,...,8,9}
{-3,-2,-1,0,1,2}
{-2,-1,0,1,2}
5.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Dacă D={x∈ℕ|x este divizor al lui 12}, atunci D∩{2,3,5,7} este egal cu:
{2,3}
{2,3,4,6}
{1,2,3,4,6,12}
Ø
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Fie A={x∈ℤ||x|<4} și B={x∈ℕ|x>2}. Care este A∩B?
{-3,-2,-1,0,1,2,3}
{3,4,5}
{3}
Ø
7.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Dacă N = {a, b, c}, atunci {a} _____ N.
este element al
este submulțime a
apartine
niciuna dintre variante
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