ECAT Mathematics MCQ's Test For Full Book With Answers

ECAT Mathematics MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which of the following has the same value as i113? i -1 -i 1
2 What is the conjugate of -6 -i? -6 +i 6+i -6 -i 6 -i
3 Which element is the additive inverse of (a, b) in Complex numbers? (a, 0) (0, b) (a, b) (-a, -b)
4 If z1= 2 + 6i and z2= 3 + 7i, then which expression defines the product of z1and z2? 36 + (-32)i -36 + 32i 6 + (-11)1 0, +(-12)i
5 15 15 i -15 i -15
6 z is purely imaginary a is any complex number z is real None of these
7 0 1 -1 None of these
8 If Z1= 1 + i, Z2= 2+3i, then |Z1- Z2| = ?
9 i101= i i<sup>2</sup> -i -1
10 The multiplicative inverse of -3i is 3i -3i -1/3i 1/3 i
11
12 In polar form of complex number r =
13
14
15 (7, 9) + (3, -5) = (4, 4) (10, 4) (9, -5) (7, 3)
16 <br>
17 i2 = 1 2 -1 0
18 (a,0) x (c, 0) = (0,ac) (ac, 0) (0,0) (a, c)
19 (a, b) + (-a, -b) = (0,0) (a, b) (-a, -b) (1, 1)
20
21 (a+bi) - (c+di)= (a+b) = (c+d) (a+c) + i(b+d) (a - c) + (c- d)i (a - c)+ (b - d)i
22 i3= -1 i -i 1
23 In (x + iy), y is called as Imaginary part Complex number Real part None of above
24 i =
25 Additive property of inequality Commutative property Additive inverse Additive identity
26 Commutative property of addition Closure property of addition Additive inverse Associative property w.r.t. to addition
27 Rule of quotient of fraction Golden rule of fraction Rule for product of fraction Principle for equality of fraction
28 Principle of equality of Fractions Rule for product of fraction Golden rule of fraction Rule of quotient of Fraction
29 (a-1)-1= a<sup>-1</sup> a -a None of above
30 Trichotomy property Additive property of inequality Transitive property Multiplicative property
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