Question

A disk has 200 tracks (0-199), with pending requests at tracks 55, 58, 39, 18, 90, 160, 150, 38, 184. The disk head is at track 100, moving toward higher track numbers. Using the SCAN (elevator) algorithm, what is the total head movement in tracks?

A 300
B 264
C 280
D 250
E 226
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RBI Grade B 2026 Phase 1 Memory Based Paper
  • 200 Questions with Detailed Solutions
  • Section-wise Coverage (GA, English, Quant & Reasoning)