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# GATE CS 2021 : Digital Logic Rapid Quiz-1 (App update required to attempt this test)

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Question 1

Number of covering function for a function f is, where function is given as

Question 2

If there is 3 variable use for function. Then the difference of number of neutral function possible and number of self-dual function is ____.

Question 3Multiple Correct Options

A, B and C are the inputs to a full subtractor. S1 and S0 are select lines of a multiplexer. Which of the following must be the information lines of a multiplexer ,I3 to produce borrow output of full subtractor at the output of a MUX. (Multi Select Question)

Question 4

Which of the following is the slowest adder?

Question 5

How many adders are required to implement the following expressions:

D = A’BC + AB’C

E = A XOR B XOR C

F = A’C + ABC’ + B’C

Question 6

Which of the following is correct
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