PMDC Verified Question 10 of 15
Five cities P, Q, R, S and T are connected by transport modes:
• P and Q connected by boat and rail
• S and R connected by bus and boat
• Q and T connected only by air
• P and R connected only by boat
• T and R connected by rail and bus

Which mode of transport takes one from Q to R without changing mode?
A
Boat
B
Rail
C
Bus
D
Air
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Boat
Concept: Path Graph Invariance.

Formula: N/A

Solution: Route Q \(\to\) P (Boat) and P \(\to\) R (Boat) maintains a continuous single transport mode (Boat).

Why other options are incorrect:

Options B, C, and D: Cannot bridge the P-R edge.

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