Mathematics
If A is any set and U is the universal set, then the complement of A is
- Φ
- A
- U - A
- U
Sets
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Answer
By definition, the complement of set A (A') consists of all elements in the Universal set U that are not in A. This is mathematically written as U - A.
Hence, option 3 is the correct option.
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Related Questions
If X = {x : x is a multiple of 5} and Y = {x : x is a multiple of 7}, then X ∩ Y is
- Φ
- {x : x is a multiple of 2}
- {5, 7}
- {x : x is a multiple of 35}
{Φ} is a / an
- empty set
- infinite set
- singleton set
- universal set
n(A - B) is equal to
- n(A) - n(B)
- n(A) - n(A ∪ B)
- n(A ∪ B) - n(A ∩ B)
- n(A) - n(A ∩ B)
Fill in the blanks :
(i) In a …………… form, we list the properties satisfied by each element of the set.
(ii) A void set is usually denoted by …………… .
(iii) If A ⊆ X, then X is called a …………… of A.
(iv) Two finite sets having the same number of elements are said to be …………… .
(v) n(A ∪ B) + n(A ∩ B) = …………… .