Which of the following pairs of sets are not | vedclass

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(A) Two sets are equal if they contain exactly the same elements. Repetition of elements in a set does not change the set.$(a)$ $A=\{1, 3, 3, 1\} = \{

Vedclass · Accepted Answer

$A=\{1, 3, 3, 1\}, B=\{1, 4\}$

Vedclass · Answer

(A) Two sets are equal if they contain exactly the same elements. Repetition of elements in a set does not change the set.$(a)$ $A=\{1, 3, 3, 1\} = \{1, 3\}$ and $B=\{1, 4\}$. Since $3 \in A$ but $3 
otin B$,$A 
eq B$.$(b)$ $A=\{x: x+2=2\} = \{0\}$ and $B=\{0\}$. Both sets have the same elements,so $A = B$.$(c)$ $A=\{1, 3, 4, 4\} = \{1, 3, 4\}$ and $B=\{3, 1, 4\}$. Both sets have the same elements,so $A = B$.$(d)$ $A=\{1, \frac{1}{2}, \frac{1}{3}, \dots\} = \{\frac{1}{n}: n \in N\}$ and $B=\{\frac{1}{n}: n \in N\}$. Both sets have the same elements,so $A = B$.

Which of the following pairs of sets are not equal?

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