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1. Which of the following expressions is in the
sum-of-products form?
1. AB(CD) D. AB + CD
2. (A + B)(C + D)
3. (AB)(CD)
4. AB + CD
2. Which of the following combinationed cannot be com- 1. Diagonal corners
bined into Karnaugh-map groups?
1. Diagonal corners
2. Corners in the same row
3. Overlapping combinations
4. Corners in the same column
3. Which of the Karnaugh maps below represents the Figure III
expression, X = AC + BC + B?
4. According to DeMorgan's theorem, ((A.B)' + C)' equals:
, 1. AB + C' 3. ABC'
2. (A + B)C
3. ABC'
4. (AB)'' + C
5. According to DeMorgan's theorem, (AB) + C equals:
1. ABC' 1. ABC'