ECAT Pre General Science MCQ Test With Answer for Mathematics Chapter 1

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

• 
  A
• 
  B
• 
  C
• 
  D

If 4 > b or a < b than a = b is a

• Additive property A
• Transitive property B
• Trichotomy property of inequality C
• None of above D

The set {1,2,3,4......} is called

• Set of natural numbers A
• Set of whole numbers B
• Set of rational number C
• Set of irrational numbers D

The symbol of irrational is

• W A
• N B
• Q C
• Q' D

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

• One A
• Two B
• Three C
• Four D

• 1 A
• -i B
• i C
• 0 D

i³ =

• -1 A
• i B
• -i C
• 1 D

• 
  A
• 
  B
• 
  C
• 
  D

The set of positive integers, 0 and negative integers is known as the set of

• Natural numbers A
• Rational numbers B
• All integers C
• Irrational numbers D

π is the ration of

• Area of a circle to its diameter A
• Area of a circle to its radius B
• Circumference of a circle to its diameter C
• Circumference of circle to its radius D

i² =

• 1 A
• 2 B
• -1 C
• 0 D

i is equal

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

• Symmetric property A
• Cancellation property w.r.t. multiplication B
• Reflexive property C
• Transitive property D

• (a + b)c = a . c + bc A
• a + b = b + a B
• (a + b) + c = a + (b + c) C
• a(b+ c) = ab + ac D

Every real number is

• a positive integer A
• a rational number B
• a negative integer C
• a complex number D

QUQ, =

• N A
• R B
• W C
• Z D

• 
  A
• 
  B
• 
  C
• 
  D

Some of two real numbers is also a real number , this property is called:

• Commutative property w.r.t addition A
• Closure property w.r.t. addition B
• Associative property w.r.t. addition C
• Distributive property w.r.t addition D

(a+bi) - (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

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

• 2ⁿ A
• 2ⁿ² B
• 2.n C
• n² D

• 
  
  
  A
• 
  B
• 
  C
• 
  D

Which of the following sets has closure property w.r.t. addition

• { 0 } A
• { 1 } B
• { 0, -1} C
• { 1, -1} 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

1/3 is a decimal

• Recurring A
• Terminating B
• Non-terminating C
• None of the above D

• Closure law of addition A
• Associative law of addition B
• Commutative law of multiplication C
• Associative law of multiplication D

i² = 

• 1 A
• 2 B
• -1 C
• 0 D

The identity element with respect to subtraction is

• 0 A
• 1 B
• -1 C
• Does not exist D

• Additive property in R A
• Multiplication property in R B
• Cancellation property in R C
• Distribution property in R D

• N A
• r B
• 2r C
• π D