1.
What will the following expression evaluate to !true && !false
A
True
B
False
C
Error
D
None of the mentioned
Answer and explanation
Correct Answer: B — False
Boolean operator && evaluates to true only when both the values are true.
ObjectiveMcq
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7 practice sets · Page 1 of 1
What will the following expression evaluate to !true && !false
True
False
Error
None of the mentioned
Boolean operator && evaluates to true only when both the values are true.
What will the following expression evaluate to (true && false) || (!true)
True
False
Error
None of the mentioned
Boolean operator && evaluates to true only when both the values are true and !true means false hence the whole expression will evaluate to false.
What will the following expression evaluate to true || false
True
False
Error
None of the mentioned
Boolean operator || evaluates to true only when both the values are true or one is true and other is false.
What will the following expression evaluate to true && false
True
False
Error
None of the mentioned
Boolean operator && evaluates to true only when both the values are true.
The boolean operator && only result in true when both the values are true?
True
False
The && operator only results in true when both the values are true rest all cases it evaluates to false.
Which of the following is a valid boolean operator?
and(&&)
or(||)
not(!)
All of the mentioned
We have three boolean operators which are and, or, not.
Boolean opeartors are also known as logical operators.
True
False
Boolean operators result in boolean values like true or false.