A binary operation \(\oplus\) is defines on the set of all positive integers by a \(\oplus\) b = ab for all positive integers a, b. Which of the following properties does NOT hold?
a
closure
b
identity
c
positive
d
inverse
Explanation
Correct Option
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Discussions (3)

razzlecool
1 year ago
inverse doesn't hold, the value for the inverse of any element within the set of positive integers can sometimes be a fraction which is not an integer btw e.g the inverse for a=2 is 1/2(not an integer), therefore inverse doesn't hold.

Deksdaboss
2 years ago
check well pls
inverse holds
in jamb remix it is associativity not positive which i think associativity should be yhe answer

