A directory of Objective Type Questions covering all the Computer Science subjects. Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews.

131. Let A and B be two arbitrary events, then:
a. P(A∩B) = P(A)P(B)
b. P(AUB) = P(A)+P(B)
c. P(AUB) ≤ P(A)+P(B)
d. P(A/B) = P(A∩B)+P(B)
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Answer: (c).P(AUB) ≤ P(A)+P(B)

132. The transitive closure of a relation R on set A whose relation matrix
transitive closure of a relation
a. A
b. B
c. C
d. D
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Answer: (b).B

133. Consider the relation on the set of non-negative integers defined by x≡y if and only if:
a. x mod 3=3 mod y
b. 3 mod x≡3 mod y
c. x mod 3=y mod 3
d. None of the above
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Answer: (c).x mod 3=y mod 3

134. Minimum number of individual shoes to be picked up from a dark room (containing 10 pair of shoes) if we have to get atleast one proper pair:
a. 2
b. 20
c. 11
d. None of these
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Answer: (c).11

135. If f(x) =x+1 and g(x)=x+3 then fofofof is:
a. g
b. g+1
c. g^4
d. None of the above
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Answer: (b).g+1

136. If Im denotes the set of integers modulo m, then the following are fields with respect to the operations of addition modulo m and multiplication modulo m:
(i) Z23      (ii) Z29
(iii) Z31    (iv) Z33
a. (i) only
b. (i) and (ii) only
c. (i), (ii) and (iii) only
d. (i), (ii), (iii) and (iv)
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Answer: (c).(i), (ii) and (iii) only

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