Loading....
Coupon Accepted Successfully!

 

Important Properties of Cardinal Number of Sets

Let A, B, C are finite sets in a finite universal set U. Then
  1. n(A B) = n(A) + n(B) - n(A B)
  2. If A and B are disjoint sets then n(A B) = n(A) + n(B)
  3. n(A B C) = n(A) + n(B) + n(C) - n(A B) - n(B C) - n(A C) + n(A B C)
  4. n(A - B) = n(A) - n(A B) = n(A B′)
  5. n(A Δ B) = n(A) + n(B) - 2 n(A B)
  6. n(A′) = n(U) - n(A)
  7. n(A B′) = n(U) - n(A B)
  8. n(A B ′) = n(U) - n(A B)




Test Your Skills Now!
Take a Quiz now
Reviewer Name