Let $\xi=\{0,1,2,3,4,5\}$, $A=\{0,2,4\}$ and $B=\{0,2\}$. State $n(A)$.[1] For each sta

Question

Let $\xi=\{0,1,2,3,4,5\}$, $A=\{0,2,4\}$ and $B=\{0,2\}$. State $n(A)$.[1] For each statement, say whether it is true or false and give a reason: $2\in A$, $\{2\}\in A$, $B\subset A$.[3]

Accepted Answer

(a) $3$ (b) True, false, true; reasons in the solution.

Distinguishing elements from subsets

Distinguishing elements from subsets

Solution:

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