46. Which one of the following is not a valid rule of Boolean algebra?

1. 1. A + 1 = 1

   
   
   

   2. A = A

   
   
   

   3. AA = A

   
   
   

   4. A + 0 = A

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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47. The domain of expression ABCD + AB + CD + B is—

1. 1. A and D

   
   
   

   2. B only

   
   
   

   3. A, B, C, D

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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48. The Boolean expression A BC D is—

1. 1. Sum term

   
   
   

   2. Product term

   
   
   

   3. A literal term

   
   
   

   4. Always 1

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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49. The Boolean expression A + B + C is—

1. 1. Sum term

   
   
   

   2. A literal term

   
   
   

   3. A product term

   
   
   

   4. A complement term

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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50. Determine the values of A, B, C that makes the sum term A + B + C equal to 0—

1. 1. A = 1, B = 0, C = 0

   
   
   

   2. A = 1, B = 1, C = 0

   
   
   

   3. A = 0, B = 0, C = 1

   
   
   

   4. All of them

   
   
   

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1. View Hint View Answer Discuss in Forum

   A + B + C = D + 0 + 1
   = 1 + 1 + 1
   = 1
   A = 0, B = 0, C = 1.

   Correct Option: C

   A + B + C = D + 0 + 1
   = 1 + 1 + 1
   = 1
   A = 0, B = 0, C = 1.

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