Math for Computer science
Questions 111 to 120
111.

Let A = {0, 2,
4, 6, 8, 10}; B = {0, 1, 2, 3, 4, 5,
6} B È (B  A) is given by


112.

is known as


113.

Which of the
following is the encrypt of the menage "THE BEST ZOO" by
translating the letters into numbers applying the caesar cipher f(p) = (p +
3) mod 26?


114.

Let n be a
positive integer. The expansion of (x
+ y)5 is


115.

Let f be a
function from A to B.
'f' is said to
be a onto function if


116.

is logically equalent to


117.

Let f is a
function from A to B.
for aÎ A such that f (a) = b then 'b' is
called


118.

Let S = {0, 1,
2, 3, 5, 6, 7} Let f be a function defined on S such that f(x) = then the range of f in given by


119.

The set {x / x Î
A and x Ï B} is defined by


120.

Let U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10} then bit string for the set A = {2, 4, 6,
8, 10} is

Answers
111.

Answer : (b)
Reason : B – A = {1, 3, 5}


112.

Answer : (d)
Reason : Absorption Law definition.


113.

Answer : (b)
Reason :


114.

Answer : (a)
Reason : By definition of Binomial Expansion.


115.

Answer : (a)
Reason : By definition of ONTO function.


116.

Answer : (a)
Reason : .


117.

Answer : (a)
Reason : By definition of image.


118.

Answer : (c)
Reason : f(0) = ëû = ë0û = 0
f (1) = ëû = ë0.2û = 0
f (2) = ëû = ë0.4û = 0
f (3) = ëû = ë0.6û = 0
f (5) = ëû = ë1û = 1
f (6) = ëû = ë1.2û = 1
f (7) = ëû = ë1.4û = 1
f (12) = ëû = ë2.4û
= 2
f(s) = {0, 1, 2}


119.

Answer : (c)
Reason :


120.

Answer : (c)
Reason : 0 0 1 0 1 0 1 0 1 0 1

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