For the binary operation `xx_(10)` on set `S={1,\ 3,\ 7,\ 9}` , find the inverse of 3.

For the binary operation xx10 on set S={1,3,7,9}, find the inverse of 3.

For the binary operation xx_(7) on the set S={1,2,3,4,5,6}, compute 3^(-1)xx_(7)4

For the binary operation xx_7 on the set S={1,\ 2,\ 3,\ 4,\ 5,\ 6} , compute 3^(-1)xx_7 4 .

The number of binary operations on the set {1,2,3} is

Number of binary operations on the set {2, 3} ls :

Find the number of binary operations on the set {a, b}.

The binary operation multiplication modulo 10(xx_(10)) is defined on the set A={0,1,3,7,9,}, find the inverse of the element 7.

Verify (i) closure property (ii) commutative property (iii) associative property (iv) existence of identity and (v) existence of inverse for the operation xx_(11) on a subset A = {1,3,4,5,9} of the set of remainders {0,1,2,3,4,5,6,7,8,9,10}.