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If A = {5, {5, 6}, 7} which of the following is correct?

(1) {5, 6} ∈ A 

(2) {5} ∈ A 

(3) {7} ∈ A 

(4) {6} ∈ A

1 Answer

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Best answer

(1) {5, 6} ∈ A 

{5, 6} is an element of A.

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