1
GATE CSE 2002
MCQ (Single Correct Answer)
+2
-0.6
Consider the following multiplexer where $$10, 11, 12, 13$$ are four data input lines selected by two address line combinations $${A_1}\,{A_0} = 00,01,10,11$$ respectively and $$f$$ is the output of the multiplex (or). $$EN$$ is the Enable input. GATE CSE 2002 Digital Logic - Combinational Circuits Question 12 English

The function $$f(x,y,z)$$ implemented by the above circuit is

A
$$ xyz'$$
B
$$ xy+z$$
C
$$x+y$$
D
None of the above
2
GATE CSE 2002
MCQ (Single Correct Answer)
+1
-0.3
"If X then Y unless Z" is represented by which of the following formulas in propositional logic? (" $$\neg $$ " is negation, " $$ \wedge $$ " is conjunction, and " $$ \to $$ " is implication)
A
$$\left( {{\rm X} \wedge \neg Z} \right) \to Y$$
B
$$\left( {X \wedge Y} \right) \to \neg Z$$
C
$${\rm X} \to \left( {Y \wedge \neg Z} \right)$$
D
$$\left( {{\rm X} \to Y} \right) \wedge \neg Z$$
3
GATE CSE 2002
MCQ (Single Correct Answer)
+2
-0.6
Four fair coins are tossed simultaneously. The probability that at least one head and one tail turn up is
A
1/16
B
1/8
C
7/8
D
15/16
4
GATE CSE 2002
MCQ (Single Correct Answer)
+2
-0.6
The binary relation $$S = \phi $$ (emply set) on set A = {1, 2, 3} is
A
Neither reflexive nor symmetric
B
Symmetric and reflexive
C
Transitive and reflexive
D
Transitive and symmetric
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