No links Q If n (A) + n (B) = (a + b)2 and n (A - Maths - Sets

Question

No links

Q     I f   n   ( A )   +   n  
( B )   =   ( a   +   b ) 2   a n d  
n   ( A   -   B )   +   n   ( B
  -   A )   =   ( a   -   b ) 2 ,
  t h e n   w h a t   i s   t h e   v a l
u e   o f   n   ( A   ∪   B )  
? A   2 a b B   a 2   +   b 2 C   2 ( a 2
b 2 ) D   a 2   -   b 2

Lovina Kansal · Accepted Answer

No links Q . I f n ( A ) + n ( B ) = ( a + b ) 2 a n d n ( A - B ) + n ( B - A ) = ( a - b ) 2 , t h e n w h a t i s t h e v a l u e o f n ( A ∪ B ) ? A . 2 a b B . a 2 + b 2 C . 2 ( a 2 b 2 ) D . a 2 - b 2

No links

$Q . I f n (A) + n (B) = (a + b)^{2} a n d n (A - B) + n (B - A) = (a - b)^{2}, t h e n w h a t i s t h e v a l u e o f n (A \cup B) ? A . 2 a b B . a^{2} + b^{2} C . 2 (a^{2} b^{2}) D . a^{2} - b^{2}$