When the following decimal fraction are converted to octal numbers, which of them becomes a finite fraction ?
a) 0.3
b) 0.4
c) 0.5
d) 0.8
Answer: C
Question 3
X NAND Y is the negation logical product of X and Y and is defined as NOT (X AND Y). What is the logical formula for X OR Y using only NAND?
a) ((X NAND Y) NAND X) NAND Y
b) (X NAND X) NAND (Y NAND Y)
c) (X NAND Y) NAND (X NAND Y)
d) X NAND (Y NAND (X NAND Y))
Answer: B
Question 4
When A and b are subsets of set S, which of the following represents （￢A ∩ ￢B） Here, ￢A and ￢B are complement of subsets A and B of set S respectively, and X-Y is a difference set of set X and set Y.
a) （￢A∪￢B）－（A∩B）
b) （S－A）∪（S－B）
c) ￢A－B
d) S－（A∩B）
Answer: C
Question 5
When logical expressions P and Q are both true, which of the following expressions is true regardless of whether the logical expression R is true or false? Here,”￢” denotes negation, “v“ denotes logical sum, “^“ denotes logical product, and “ → “ denotes implication (the dyadic boolean operation whose result is FALSE only when TRUE → FALSE)
a)
b)
c)
d)
Answer: C
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