Among five persons F, E, U, S and I, I is lighter than only one person. I is heavier than U. S is lighter than F. U is heavier than F. Who is the lightest of all?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → S
Join the comparisons into one chain from the heaviest to the lightest. ‘Lighter than only one person’ means second heaviest.
I is heavier than U, and U is heavier than F: I > U > F
S is lighter than F: I > U > F > S
I is lighter than only one person, so I is second; the one heavier than I is the remaining person, E
Order: E > I > U > F > S, so S is the lightest
