(4) Here, x ∠ y + z means x ≠ y > z and Hence, Case I. x > y > z Case II. x < y > z Now, according to, Option 1, x × y | z, means x = y < z (Not true) Option 2, x – y × z means x is not less than y and y = z (Not true) Option 3, x ∠ y ∅ z means x ≠ y and y is not greater than z (Not true) Option 4, x – y ∠ z means x is not less that y and y ≠ zWhich means either x > y > z or x = y > z or x = y < x (May be true)