(𝐴 ∪ ∅) ∩ ∅ = 𝐴 where 𝐴 is a set
Question
(𝐴 ∪ ∅) ∩ ∅ = 𝐴 where 𝐴 is a set
Solution
The statement is incorrect. Here's why:
Step 1: Understand the symbols The symbols used are from set theory. "∪" stands for union, "∩" stands for intersection, and "∅" stands for the empty set.
Step 2: Break down the equation The equation can be broken down into two parts: (𝐴 ∪ ∅) and (∅ ∩ ∅).
Step 3: Solve each part The union of any set 𝐴 and the empty set ∅ is 𝐴 itself because there are no additional elements in ∅ to add to 𝐴. So, (𝐴 ∪ ∅) = 𝐴.
The intersection of the empty set with itself is still the empty set because there are no elements in ∅ to intersect. So, (∅ ∩ ∅) = ∅.
Step 4: Combine the parts Now, we combine the two parts using the intersection operation. The intersection of set 𝐴 and the empty set ∅ is ∅ because there are no common elements between 𝐴 and ∅. So, (𝐴 ∪ ∅) ∩ ∅ = ∅.
Therefore, (𝐴 ∪ ∅) ∩ ∅ ≠ 𝐴. The statement is false.
Similar Questions
Let 𝐴 and 𝐵 be sets. Using set builder notation, show that:a) 𝐴 ∩ ∅ = ∅.b) 𝐴 ∪ 𝐴 = 𝑈.c) 𝐴 ∩ (𝐵 − 𝐴) = ∅
Let 𝐴 and 𝐵 be sets. Show thata) (𝐴 ∩ 𝐵) ⊆ 𝐴.b) 𝐴 ⊆ (𝐴 ∪ 𝐵).c) 𝐴 − 𝐵 ⊆ 𝐴.d) 𝐴 ∩ (𝐵 − 𝐴) = ∅.e) 𝐴 ∪ (𝐵 − 𝐴) = 𝐴 ∪ 𝐵.
Suppose that A and B are sets. Prove that A ∩ (B \ A) is the empty set
If A ⊂ B, then A ∩ B = A ∪ B.sometimesalwaysnever
If X and Y are two sets, then ¨ ∩ ©ª ∩ (¨ ∪ ©)′ is(a) ¨′ (b) ©′(c) ϕ (d) None of the above
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.