ECAT Mathematics Chapter 23 With Answers

image
image
image

ECAT Mathematics Chapter 23

Sr. # Questions Answers Choice
1 To each element of a group there corresponds ______ inverse element Two One No Three
2 The function f{(x, y) | y = ax2+ bx + c} is One-one function Constant function Onto function Quadratic function
3 The graph of a quadratic function is Circle Straight line Parabola Triangle
4 A function whose range is just one elements is called One-one function Constant function Onto function Identity function
5 The set of the first elements of the orders pairs forming a relations is called its Relation in B Range Domain Relation in A
6 If #n = (n-5)2+ 5, then find #3 x #4. 54 12 4 9
7
8 The set { {a, b} } is Infinite set Singleton set Two points set Empty set
9 Singleton set A set with two points Empty set None of these
10 Φset is the ______ of all sets? Subset Union Universal Intersection
11 In a country, 55% of the male population has houses in cities while 30% have houses both in cities and in village. Find the percentage of the population that has house only in villages. 45 30 25 50
12 Decimal part of irrational number is Terminating Repeating only Neither repeating nor terminating Repeating and terminating
13 Multiplicative inverse of 0 is 0 1 +-1 Does not exist
14 The identity elements with respect to subtraction is 0 1 -1 Does not exist
15 -x Infinite set {-4, 4} None of these
16 1/x -x 2x 0.5 x
17 Additive inverse of -a -b is a -a + b a - b a + b
18 If a set S contains "n" elements then P (S) has ...... number of elements 2<sup>n</sup> 2<sup>2n</sup> 2 . n n<sup>2</sup>
19 Multiplicative inverse of "1" is +- 1 0 1 None of these
20 The set {-1, 1} is closed under the binary operation of Addition Multiplication Subtraction Division
Download This Set
×