The solution for 1 3 - 2x 7; x ∈ N (Natural numbers) is : 1. {8} 2. {-1, -2} 3. { } 4. {1}

Given, Inequation : 1 3 - 2x 7 Solving L.H.S. of the inequation : ⇒ 1 3 - 2x ⇒ 2x 3 - 1 ⇒ 2x 2 ⇒ x ⇒ x 1 ................(1) Solving R.H.S. of the inequation : ⇒ 3 - 2x 7 ⇒ 2x 3 - 7 ⇒ 2x -4 ⇒ x ⇒ x -2 .................(2) From (1) and (2), we get : -2 x 1 and x ∈ N. So, Solution set is an empty set. Hence, Option 3 is the correct option.