Math for Computer science
Questions 81 to 90
81.
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A Ç (A È B) = A is known as
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82.
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Let U =
{1, 2, 3, 4, 5 ….10} then bit string for the set A = {1, 2, 5, 6, 9, 10} is
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83.
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Let U =
{1, 2, 3, ….10} the set representation of bit string 10 01 00 11 10
is
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84.
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If every
element of a set A is also an element of B then A and B are connected by the
relation
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85.
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A
Relation is said to be a function if
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86.
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Let f(x)
= éx2/4ù defined on A = {1, 2, 3, 4} then
f(A) is
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87.
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Let f : A
® B be a function. Let x Î A and f(x) = y then x is called
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88.
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Let f : A
® B be a function. If Co-domain of the function equals
to Range of the function, then the function is called
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89.
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The
inference Rule of the form [(pÚq) Ù (ù p Ú r)] ® (q Ú r) is known as
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90.
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Biconditional
operator is true only when
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Answers
81.
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Answer : (d)
Reason: By definition of Absorption Law.
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82.
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Answer : (e)
Reason: U = {1, 2, … 10}
A = {1, 2, 5, 6,
9, 10}
Bit string: 11 00 11 00 11
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83.
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Answer : (b)
Reason: U = {1, 2, … 10}
A = {1, 4, 7, 8,
9}
Bit string : 10 01 00 11 10
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84.
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Answer : (c)
Reason: By definition of subset, A is subset of B
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85.
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Answer : (e)
Reason: By definition of a function Every element of
the first set is mapped to atleast one element in second set.
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86.
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Answer : (c)
Reason: é ù for x Î {1, 2, 3, 4}
x = 1 Þ f(1) = éù = éù = é0.25ù = 1
x = 2 Þ f(2) = éù = éù = é1ù = 1
x = 3 Þ f(3) = éù = éù = é2.25ù = 3
x = 4 Þ f(4) = éù = éù = 4
\ f(A) = {1, 3, 4}
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87.
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Answer : (d)
Reason: By definition of Pre image
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88.
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Answer : (b)
Reason: By definition of Subjective function
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89.
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Answer : (d)
Reason: By definition of Resolution.
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90.
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Answer : (b)
Reason: By definition of Bi conditional
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