Which of the following is not a valid Boolean expression? Which of the following

Question

Which of the following is not a valid Boolean expression? Which of the following is a valid Boolean expression? Which operator returns false when two things are not equal. Which operator returns false when two things are equal.? Which operator always returns false when a is not less than b? Which operator returns true when two things are equal? What does the --operator do? What is the value of a? What is the value of a? What is the value of a? What is the value of a? What is the value of a? What is the value of a? What is the value of a? What is the value of a? What is the value of a? T or F: Java will evaluate the expression T or F: Java will evaluate the expression T or F: Java will evaluate the expression T or F: Java will evaluate the expression T or F: Java will evaluate the expression T or F: Java will evaluate the expression T or F: Java will evaluate the expression T or F: Java will evaluate the expression Consider this code: Mark the true state

Explanation / Answer

Posted with all answers

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1)
   Answer:
           1.x=y
       Is not a valid Boolean expression
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2)
   Answer:
           3. x!=y
           Is a valid Boolean expression
          
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3)
   Answer:
           3. ==
           Returns false when two things are not equal
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4)

   Answer:
           4. !=
           Returns false when two things are equal
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5)
   Answer:
           4. a<4
           Returns false when a is not less than b
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6)
   Answer:
           3. ==
           Returns truw when two things are equal
          
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7)
   Answer:
           1.Compares two things are equality
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8)
   Answer:
           3. false
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9)
   Answer:
           2. true
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10)
   Answer:
           3. true
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11)
   Answer:
           2. true
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12)
   Answer:
           2. true
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13)
   Answer:
           3. false
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14)
   Answer:
           2. true
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15)
   Answer:
           3. no value , an error occured
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16)
   Answer:
           2. true
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17)
   Answer:   T
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18)
   Answer:   F
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19)
   Answer:   T
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20)
   Answer:   F
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21)
   Answer:   F
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22)
   Answer:   T
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23)
   Answer: F
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24)
   Answer: T
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25)
   Answer:
           2. Only one of A and B can be printed
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26)
   Answer:
           3. It is possible that both A and B can be printed
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27)
   Answer:
           3. (!(!(!(b))) is same as !(b)
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28)
   Answer:
           3. !(a&&b) is same as !a || !b
  
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29)
   Answer: 3
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30)
   Answer:
           3. !(a<b) is the same as a>=b

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31)
   Answer: 4
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32)
   Answer: 5
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33)
   Answer: 4
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34)
   Answer:
           4. One value will be printed in total
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35)
   Answer:
           2. One or two values will be printed in total
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36)
   Answer: 1
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37)
   Answer: 1
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38)
   Answer: 4
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39)
   Answer:   2
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40)
   Answer: 4
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41)
   Answer:
           2. even then done OR just done
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42)
   Answer:
           1. even or odd but not both
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43)
   Answer:
           4. bigger
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