Let A={1,2,{3,4}, 5} . Which of following statements are incorrect and why ? 1 ∈ A

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1.Set Theory

easy

Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?

$1 \in A$

Option A

Option B

Option C

Option D

Solution

$A=\{1,2,\{3,4\}, 5\}$

The statement $1 \in A$ is correct because $1$ is an element of $A$.

Standard 11

Mathematics

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