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If A = {1, 2, 3} and B = {1, 2, 3, 4}, then A ≠ B verify it

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If A = {1, 2, 3} and B = {1, 2, 3, 4}, then A ≠ B verify it

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Here, 4 ∈ B but 4 ∉ A

∴ A and B are not equal sets,

i.e. A ≠ B

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If A = {1, 2, 3} and B = {1, 2, 3, 4}, then A ≠ B verify it.
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