Difficulty: Easy
Correct Answer: 8
Explanation:
Introduction / Context:
Powers of two are the backbone of binary arithmetic, memory sizing, addressing, and timing divisions. Quickly converting between exponents and decimal values is a vital skill in digital design and computer engineering.
Given Data / Assumptions:
Concept / Approach:
Exponentiation with an integer exponent n means repeated multiplication by the base: a^n = a * a * ... * a (n times). For base 2, small exponents are frequently memorized: 2^0 = 1, 2^1 = 2, 2^2 = 4, and 2^3 = 8, continuing as 16, 32, 64, etc.
Step-by-Step Solution:
Compute 2^3 = 2 * 2 * 2.First multiplication: 2 * 2 = 4.Second multiplication: 4 * 2 = 8.Therefore, the decimal value of 2^3 is 8.
Verification / Alternative check:
Consider binary counting: after 1, 10, and 11, the fourth unique value is 100(2), which equals 4 in decimal; adding another doubling to reach 1000(2) confirms 2^3 = 8.
Why Other Options Are Wrong:
Common Pitfalls:
Final Answer:
8
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