Boolean Logic & Conditional Statements
In Java, what is the value of the expression (5 > 3) == (8 > 6)
?
"5 > 3"
false
true
"8 > 6"
What is one simple technique to ensure reliability when comparing two boolean expressions?
Increasing complexity by adding unrelated conditional statements.
Writing lengthy descriptive comments instead of adjusting or reviewing code.
Replacing complex parts with known values and comparing results.
Changing variable names frequently.
Which of the following is an equivalent boolean expression to "a || !a"?
true
!a
false
a
Which of the following expressions is equivalent to the expression (!A || B) && A?
A || !B
A && B
A || B
!A && B
What is the result of simplifying the expression (p && q) || (p&&!q)||(!p&&q)
?
(p||q)&&(!p||!q)
(p&&!q)||(!p&&q)
p&&q
p||q
Which expression remains true regardless of the values of the boolean variables M and N?
(m && n) == (!m | !n)
M && (M || N)
M || (M && N)
Which expression could replace '???' if ((a == b)&&(c)) { ??? } else { c = false; } ensures 'c' remains true when 'a' equals 'b'?
break;
return;
c = true;
continue;

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Which operation can replace '&&' in the expression (x >= y) && (y != z)
while maintaining equivalence?
while(x >= y){...(y != z);}
if (x >= y)...(y != z)...
do{...}while((x >= y)&&(y != z))
for(x >= y;...;)(y != z)...
What advantage do properly named classes and methods offer in terms of code maintenance?
Singlehandedly enable cross-platform compatibility without additional coding
Facilitate better understanding and navigation through code for developers during updates and debugging
Increase data processing speed due to optimized name resolution at runtime
Provide automatic documentation thus replacing traditional commenting strategies
In the given expression (X-->Y)==(!(X)||Y)
, which of the following represents its contrapositive while maintaining logical equivalence?
(Y-->X)!=(!(X)&&Y)
(X-->Y)||(Y-->X)
(X-->Y)&&!(Y-->X)
(X-->Y)==(!(Y)||X)