If U={−5, −4, −3, −2, −1, 0, 1, 2, 3, 4, 5} A={x/x^2 =25, x ∈ Z} B={x/x^2 +5=9, x ∈ Z} and C={x/−2≤ x ≤ 2, x ∈ Z} then (A ∩ B ∩ C)^c ∩ (A△B)^c =?


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Question Number 38222 by sir themes last updated on 23/Jun/18
$If U={−5, −4, −3, −2, −1, 0, 1, 2, 3, 4, 5} A={x/x^2 =25, x ∈ Z} B={x/x^2 +5=9, x ∈ Z} and C={x/−2≤ x ≤ 2, x ∈ Z} then (A ∩ B ∩ C)^c ∩ (A△B)^c =?$
$If U = {- 5, - 4, - 3, - 2, - 1, 0, 1, 2, 3, 4, 5}$ $A = {x / x^{2} = 25, x \in Z}$ $B = {x / x^{2} + 5 = 9, x \in Z} and$ $C = {x / - 2 ⩽ x ⩽ 2, x \in Z} then$ ${(A \cap B \cap C)}^{c} \cap {(A △ B)}^{c} = ?$
Commented by Joel579 last updated on 23/Jun/18

$Δ what is it mean ?$
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