Digital Electronics and Logic Design MCQ: It is required to construct a 2n-to-1 multiplexer by using 2-to-1 multiplexer only. How many of 2-to-1 multiplexers are needed ?

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It is required to construct a 2n-to-1 multiplexer by using 2-to-1 multiplexer only. How many of 2-to-1 multiplexers are needed ?

Correct Answer: 2^n-1

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