ECAT Mathematics MCQ's Test For Full Book With Answers

ECAT Mathematics MCQ's Test For Full Book

Sr. # Questions Answers Choice
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6 The set of natural no. is closed under multiplication subtraction difference division
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19 None of these
20 i-(4n+2) = ------------------------------- 1 i -1 -i
21 i is equal (1 , 0) (0 , 1) (1 , 1) (0 , 0)
22 If z1 = (a,b), z2=(c,d), then z1 z2 = ------------------- (ac,bd) (ac+bd, ad-bc) (ac-bd , ad+bc) (ac-bd , ad-bc)
23
24 If z = (x,y) , then  z ̅  = (-x,y) (x,-y) (-x, -y) None of these
25 If z=(x,y) then z has no multiplicative inverse when x ≠ 0, y = 0 x = 0, y = 0 x = 0, y ≠ 0 None of these
26 ∀x,y∈R and x> 0 , y>0, if x > y None of these
27 ∀a,b,c∈R, a >b ∧ b>c ⇒ a >c is Trichotomy property Transitive property Symmetric property Additive property
28 For any real numbers x,y,xy=o ⇒ x ≠ 0 ∧ y ≠ 0 x = 0 ∨ y = 0 x = 0 y = 0
29 If z1 = 1 + 2i, z2 = 3 + 4i then z<sub>1</sub> &gt; z<sub>2</sub> z<sub>1</sub>&nbsp;= z<sub>2</sub> z<sub>1</sub>&nbsp;&lt; z<sub>2</sub> None of these
30 ∀ z ∈ C, multipliucative is (1,1) (1,0) (0,1) None of these
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