ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

A non-terminating non_recurring decimal represents an

• Irrational no A
• Both a & c B
• Rational no C
• None of these D

• 
  A
• 
  B
• 
  C
• 
  D

a >b, b >c ⇒a >c is a

• Multiplicative property A
• Additive property B
• Trichotomy property C
• Transitive property of inequality D

Any recurring decimal represents a

• Irrational no A
• Integer B
• Rational no C
• None of these D

Name the property used in a (b-c) = ab - ac

• commutative property of multiplication A
• distributive property of multiplication B
• associative property of multiplication C
• multiplicative inverse D

(a,0) x (c,0) =

• (0,ac) A
• (ac,0) B
• (0,0) C
• (a,c) D

202.04 is an example of

• Recurring decimals A
• Non-recurring decimals B
• Terminating decimals C
• None of above D

∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of

• Commutative law of addition A
• Associative law of addition B
• Additive identity C
• Additive inverse D

(a,0) x (c, 0) =

• (0,ac) A
• (ac, 0) B
• (0,0) C
• (a, c) D

The order axioms are satisfied by set of

• C A
• C and R B
• R C
• None of these D

6 is

• A prime integer A
• An irrational number B
• A rational number C
• An odd integer D

The square root of 2i - 20i is

• ±(5 - 2i) A
• ±(5+ 2i) B
• (5 - 2i) C
• None of these D

(a +bi) -c (c +di) =

• (a +b) = (c +d) A
• (a +c) + i(b +d) B
• (a -c) + (c -d)i C
• (a -c) +(b -d) i D

i^-(4n+2) = -------------------------------

• 1 A
• i B
• -1 C
• -i D

If a set S contains n elements then P (S) has ........ number of elements

• 2ⁿ A
• 2ⁿ² B
• 2.n C
• n² D

6 is

• A prime integar A
• An irrational number B
• A rational number C
• An odd integer D

Geometrically, the modulus of a complex number represents its distance from the

• Point (1, 0) A
• Point (0, 1) B
• Point (1, 1) C
• Point (0, 0) D

i¹⁰¹=

• i A
• i² B
• -i C
• -1 D

QUQ, =

• N A
• R B
• W C
• Z D

i³=

• -1 A
• i B
• -i C
• 1 D

The additive identity of real number is

• 1 A
• 2 B
• 1/2 C
• 0 D

• Rational A
• Irrational B
• Even C
• Odd D

Every natural number is

• A prime number A
• An irrational number B
• An integer C
• An even number D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

(7,9) +(3,-5) =

• (4,4) A
• (10,4) B
• (9,-5) C
• (7,3) D

∀a,b,c∈R and c>0,then

• a>b ⇒ ac < bc A
• a>b ⇒ ac > bc B
• a<b ⇒ ac > bc C
• None of these D

• Commutative law of addition A
• Associative law of addition B
• Additive identity C
• Additive inverse D

Every recurring decimal represents

• A natural number A
• A rational number B
• An irrational number C
• A whole number D

In R the number of identity element w.r.t '+' is

• One A
• Two B
• Three C
• Four D