GO Classes Weekly Quiz 10 | Discrete Mathematics | Set Theory, Mathematical Logic, Lattice | Question: 7

Answer 1

• $0^{-1}$ = 1
• $1^{-1}$ = 0
• $a^{-1}$ = b
• $b^{-1}$ = a

Other than this 4 elements no other element has complements.

Total number of elements = 10

Number of elements that has no complement = 10 – 4 = 6.