Jambmaths question:
A binary operation * defined on the set of positive integer is such that that $x*y=2x-3y+2$ for all positive integers x and y. The binary operation is
Option A:
commutative and closed on the set of positive integers
Option B:
neither commutative nor closed on the set of positive integers
Option C:
commutative but not closed on the set of positive integers
Option D:
not commutative but closed on the set of positive integers
Jamb Maths Solution:
Option D
Jamb Maths Topic:
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