Which one of the following is not a valid identity?
I. x ⨀ y = x.y, if x = 1 or y = 1
II. (x ⨀ y) ⨀ z = x ⨀ (y ⨀ z)1
Only I
2
Only II
3
Both I and II
4
None of these
5
Question Not Attempted
Which one of the following is not a valid identity?
I. x ⨀ y = x.y, if x = 1 or y = 1
II. (x ⨀ y) ⨀ z = x ⨀ (y ⨀ z)