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1st Grade
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61 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Верным является тождество:
A ∩(B ∪ C) = (A ∩ B) ∪ C .
A ∪ B = A .
A ∩(B ∪ C) = (A ∩ B) ∪ C .
⦁ A ∩ B = B .
⦁ A ∩ B = B ∩ A
A∪(B ∩C) = ( A∪ B) ∩( A∪C).
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Верным является тождество:
⦁ A ∩ B = B .
⦁ A ∪ B = A .
⦁ A ∪ B = B ∪ A.
A ∩(B ∪ C) = (A ∩ B) ∪ C .
A∩(B ∪C) = ( A∩ B) ∪( A∩C).
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Верным является тождество:
(−A) = A .
A ∪(−A) = U
⦁ A ∩ A = ∅ .
⦁ A∩U = A
⦁ A \ U = ∅.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Верным является тождество:
(−A) = A .
⦁ A ∪ A = A ∩ A
⦁ A ∩ A = ∅
⦁ A ∪ B = A ∪(B \ A).
⦁ A∪U = U .
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Разностью множеств А и В называется множество:
⦁ {x | x ∉ A и
⦁ {x | x ∉ A и
⦁ {x | x ∈ A и
⦁ {x | x ∈ A и
x ∉ B}.
x ∈ B}.
x ∉ B}.
x ∈ B}.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Объединением множеств А и В называется множество:
⦁ {x | x ∈ A
или
x ∈ B}.
⦁ {x | x ∈ A и x ∈ B}.
⦁ {x | x ∈ A и
⦁ {x | x ∉ A и
x ∉ B}.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Симметрической разностью множеств А и В называется множество:
(A ∪ B) \ (A ∩ B) .
( A \ B) ∩(B \ A) .
( A ∪ B) \ (A \ B) .
(A ∩ B) ∪(B \ A) .
(A \ B) ∪(B \ A).
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