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

• Reflexive property A
• Symmetric property B
• Transitive property C
• Additive property D

There is no element common in

• N and W A
• E and W B
• N and O C
• Q and Q' D

• 
  A
• 
  B
• 
  C
• 
  D

• Rule of quotient of fraction A
• Golden rule of fraction B
• Rule for product of fraction C
• Principle for equality of fraction D

• a = a A
• a < a B
• a > a C
• a²= a D

The sum of complex number (a,b) and (c,d) is

• 
  A
• 
  B
• 
  C
• 
  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

• 
  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

The value of x and y when (x + iy)2 = 5 - 4i

• x = 2, y = -1 A
• x = -2, y = 1 B
• x = 2, y = -i C
• x = 2, y = 2 D

i¹⁰¹ =

• i A
• i² B
• -i C
• -1 D

a >b ⇒a +c >b +c is known as

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

1/3 is a decimal

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

In polar form of complex number r =

• 
  A
• 
  B
• 
  C
• 
  D

∀x,y,z ∈ R and z 0,then

• x > y ⇒ xz > yz A
• x<y ⇒ xz < yz B
• x < y ⇒ xz > yz C
• None of these D

• 
  A
• 
  B
• 
  C
• 
  D

i³=

• -1 A
• i B
• -i C
• 1 D

The multiplicative inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

It is not possible to find the exact value of

• π A
• √9 B
• ∛27 C
• √1 D

Associative law of multiplication

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

O is ______

• A positive integer A
• A negative integer B
• A natural number C
• An integer D

3/4 is ______

• An odd number A
• An even number B
• A natural number C
• A rational number D

• 
  A
• 
  B
• 
  C
• 
  D

Which element is the additive inverse of (a,b) in Complex numbers

• (a,0) A
• (0,b) B
• (a,b) C
• (-a,-b) D

• additive property A
• multiplicative property B
• additive identity C
• multiplicative identity D

The solution set of the equation |3x + 2| = 5 is

• 
  A
• 
  B
• 
  C
• 
  D

24 can be written as a product of

• Odd factors A
• Even factors B
• Whole factors C
• Prime factors D

4/√49 is a

• Irrational Number A
• Prime Number B
• Rational number C
• Whole number D

Every recurring decimal represents

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

Every irrational number is

• A real number A
• A prime number B
• A natural number C
• An integer D