Math for Computer science
Questions 141 to 150
141.

All the members
of a set A are indicated by dots on the number line as given below. A =


The universal
set is E and E = {Sun, Moon, Earth, Mars, Jupiter, Saturn, Neptune}.
A = {Moon, Mars,
Jupiter} and
B = {Sun, Moon,
Earth}
Then, A È Bc is:


{x / x ÎR and x2 + 9 = 6x} equals:


Which of the
following sets is null (i.e. empty)?


Let A = {a, b,
c}, B = {1, 2} and the function f : A →B be defined as f(a) = 1, f(b) =
2, f(c) = 2.
Which of the
following statements is correct?


Consider the
following venn diagram.
The shaded
portion in the Venn diagram represents


If A = {(x, y) /
x, y ∈R and x2 + y2 = 17} and B = {(x, y) / x, y ∈R and x + y = 5},
then, A ∩B equals to


Let and which of the
following is correct?


Which of the
following sets of ordered pairs is a function defined on a set A= {1,2,3,4}


Given f : Z à R, where f(x) = x, for x Î Z. Which of the following statement
is true about the range of f.

Answers
141.

Answer : (d)
Reason : by
the definition set builder notation

Answer : (d)
Reason : by
the definition set builder notation


Answer : (a)
Reason : by
the definition set builder notation


Answer : (b)
Reason : by
the definition of empty set


Answer : (a)
Reason : by
the definition of onto function


Answer : (c)
Reason : by
the definition of venn diagrams


Answer : (e)
Reason : by
the definition of set builder notation constructing the sets and simplification
A ∩ B = {(1, 4), (4, 1)}


Answer : (b)
Reason : by
the definition of composition of functions


Answer : (e)
Reason : by
the definition of function


Answer : (c)
Reason : by
the definition of function the Range of
f = N È {0}

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