Verify the (1) closuer property (2) commutative property (3) associative property (4) existence of identity and (5) existence of inverse for the operation X11 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.

Verify the (1) closuer property (2) commutative property (3) associative property (4) existence of identity and (5) existence of inverse for the operation $X_{11}$ on a subset A = $\{1, 3, 4, 5, 9\}$ of the set of remainders $\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10\}$ .

Mixed-up sentence exercise

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