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Find N(A)for the Set A) n(A)=38n ( A ) = 38

Question 132

Multiple Choice

Find n(A) for the set.
- A={12,12,23,23,34,34,,1920,1920}A = \left\{ \frac { 1 } { 2 } , - \frac { 1 } { 2 } , \frac { 2 } { 3 } , - \frac { 2 } { 3 } , \frac { 3 } { 4 } , - \frac { 3 } { 4 } , \ldots , \frac { 19 } { 20 } , - \frac { 19 } { 20 } \right\}


A) n(A) =38n ( A ) = 38
B) n(A) =n ( A ) = Infinite
C) n(A) =40n ( A ) = 40
D) n(A) =19n ( A ) = 19

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