ECAT Mathematics Chapter 23 With Answers

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ECAT Mathematics Chapter 23

Sr. # Questions Answers Choice
1 Multiplicative inverse of "1" is 0 -1 1 {0, 1}
2 The multiplicative inverse of x such that x = 0 is -x does not exist 1/x 0
3 The complement of set A relative to universal set U is the set
4 A = C A = B B = C None of these
5 4 3 2 1
6
7 G = {e, a, b, c} is an Abelian group with e as identity element. The order of the other elements are 2, 2, 2 3, 3, 3 2, 2, 4 2, 3, 4
8 Z is the set of integers, (z, *) is a group with a * b = a + b + 1, a, b∈G. then inverse of a is -a a + 1 -2 -a None of these
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10 none of these
11 The negation of a number a relation a function unary operation binary operation
12 none of these
13 square root function identity function linear function quadratic function
14 The graph of a linear function is a circle triangle a straight line none of these
15 a constant function linear function quadratic funtion none of these
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17
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