Let U denote universal set and A be any set. If n( U ) = 25 and n( A ) = 17, find n ( A’ ) ​

2 thoughts on “Let U denote universal set and A be any set. If n( U ) = 25 and n( A ) = 17, find n ( A’ ) ​”

1. Answer:

   n(A’)=8

   Step-by-step explanation:

   n( U ) = 25 and n( A ) = 17

   We know that

   A’=U-A

   Thus n(A’)=n(U)-n(A)

   =25-17

   =8

   Example :

   Let U={1,2,3,————–25}

   and A { 1,2,3—————17}

   Then A’=U-A={18,19,20,21,22,23,24,25}

   We see that A’ is having 8 elements

   so n(A’)=8

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2. Answer:

   n(U) = 25

   n(A) = 17

   n(A’) = 25-17 = 8

   Reply