Difficulty: Easy
Correct Answer: 1001001111111010₂
Explanation:
Introduction / Context:
Hexadecimal is a compact human-readable notation for binary because each hex digit corresponds to exactly four binary bits (a nibble). Converting hex to binary is therefore a straightforward substitution task—ideal practice for digital design and low-level programming.
Given Data / Assumptions:
Concept / Approach:
Replace each hex digit with its 4-bit binary equivalent: 9→1001, 3→0011, F→1111, A→1010. Concatenate in the same order to form the full binary number.
Step-by-Step Solution:
Write nibbles: 9 3 F A.Convert: 9→1001, 3→0011, F→1111, A→1010.Concatenate: 1001 0011 1111 1010 → 1001001111111010₂.
Verification / Alternative check:
Back-convert by grouping the binary into nibbles: 1001 0011 1111 1010 → 9 3 F A → 93FA₁₆. The round-trip confirms accuracy.
Why Other Options Are Wrong:
(b) has an extra bit. (c) and (d) contain scrambled groupings that do not reproduce 93FA₁₆. (e) is invalid since a correct option exists.
Common Pitfalls:
Dropping leading zeros within a nibble or mis-grouping bits. Keep 4 bits per hex digit.
Final Answer:
1001001111111010₂.
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