Mulțimi definite printr-o proprietate comună a elementelor lor

Quiz
•
Mathematics
•
8th Grade
•
Hard

SANDA BARBU
FREE Resource
16 questions
Show all answers
1.
DROPDOWN QUESTION
1 min • 1 pt
Determinați mulțimea B = {x | x ∈ A și x ∈ N}.
(a)2.
DRAG AND DROP QUESTION
1 min • 1 pt
Determinați mulțimea C = {x | x ∈ A și x ∈ Z}.
(a)
C = {−1,5; 0; −2; −3; 13}
C = {−1,5; 0; −2; 13}
C = {−1,5; 0; −2; −3}
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Determinați mulțimea D = {x | x ∈ A și x ∈ Q}.
D = {-1, 5; 0; -2; 0,(3); -3; 91/7; 3/4; ; }
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Determinați mulțimea E = {x | x ∈ A și x ∈ R \ Q}.
E = {−2; 0,(3)}
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Scrieți mulțimea A = {0, 1, 4, 9, 16, ...} cu ajutorul unor proprietăți ale elementelor sale.
A = {x | x = 2n, n ∈ N}
A = {x | x = n+1, n ∈ N}
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Scrieți mulțimea B cu ajutorul unor proprietăți ale elementelor sale.
B = {x | x = n/(n+1), n ∈ N*}
B = {x | x = n/(n-1), n ∈ N*}
B = {x | x = n/(2n+1), n ∈ N*}
B = {x | x = (n+1)/n, n ∈ N*}
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Scrieți mulțimea C = {−1, 1, 2, −2, 5, −5, 10, −10} cu ajutorul unor proprietăți ale elementelor sale.
C = {x | x = ±a, a ∈ {1, 2, 5, 10}}
C = {x | x = 2a, a ∈ {−5, −2, 1, 5}}
C = {x | x = ±a, a ∈ {1, 2, 3, 4}}
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