Concept drill

coins

GATE Instrumentation · Puzzles / Arrangement · 2026-2026

PYQs

100%

keyed

elite explanations

years appeared

Study anchor

Rosen — Discrete Mathematics and Its Applications

Discrete structures, counting, relations, graph theory

Practice action

Start latest PYQ

PYQs in this concept

All concepts →

2026 Q5

A coin with heads facing up is shown as H and a coin with tails facing up is shown as T . Six coins are placed in the Starting Arrangement, as shown in the figure below. A "step" i...

mediumanswer key