Question

S₁: Twice the weight of Sohan is less than the weight of Mohan or that of Rohan.

S₂: Twice the weight of Rohan is greater than the weight of Mohan or that of Sohan.

1. Which one of the following statements is correct?

(a) Weight of Mohan is greatest

(b) Weight of Sohan is greatest

(c) Weight of Rohan is greatest

(d) 'Whose weight is greatest' cannot be determined

2. Which one of the following statements is correct?

(a) Weight of Mohan is least

(b) Weight of Sohan is least

(c) Weight of Rohan is least

(d) Whose weight is least' cannot be determined

Answer 1

S₁ → 2 x (Sohan's weight) < {(Mohan's weight) or (Rohan's weight)}

S₂ → 2 x (Rohan's weight) > {(Mohan's weight) or (Sohan's weight)} 

1. (d) From S₁ and S₂, either Rohan or Mohan's weight is greatest but we can't determined whose weight is greatest. 

2. (b) From S₁, weight of Sohan is least.