Logical deduction – "only the hardy can climb Sagarmatha": Pick the valid implication. (i) Santosh climbed Sagarmatha. (ii) Santosh did not climb Sagarmatha. (iii) Santosh is hardy. (iv) Santosh may be hardy.

Introduction / Context:
"Only the hardy can climb" means Climb ⇒ Hardy. It does not say Hardy ⇒ Climb.

Given Data / Assumptions:

• From a successful climb, infer hardiness.

Concept / Approach:
(i) implies (iii); hence choose (i) (iii).

Step-by-Step Solution:

Verification / Alternative check:
(iii) (i) is the converse and not guaranteed.

Why Other Options Are Wrong:
They either assert converse or provide unrelated negations/possibilities.

Common Pitfalls:
Reading "only" as biconditional.

Final Answer:
(i) (iii)