Discussion
What is the largest decimal value that can be represented by a 4-bit binary number ?
Answer: D
Correct answer: 15
Four bits give \(2^4 = 16\) distinct patterns, running from 0 to 15.
\[1111_2 = 8 + 4 + 2 + 1 = 15\]
Answering 16 counts the patterns rather than naming the largest value.
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