Instrumentation and Electrical (I&E) Technician Practice Test 2026 - Free I&E Technician Practice Questions and Study Guide

In hexadecimal, each digit represents a value from 0 to 15, using 0–9 and A–F for 10–15. The symbol F stands for 15. Since this is a single-digit hex number, its decimal value is simply 15 (F × 16^0 = 15). Therefore, the correct decimal value is 15. (For reference, E is 14, D is 13, and 10 in decimal would be a two-digit hex value, not F.)