ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 1 (Number System)

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

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

4/√49 is a

• Irrational Number A
• Prime Number B
• Rational number C
• Whole number 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 ε R,a +c = b + c = > a = b

• Reflexive property A
• Symmetric property B
• Cancellations property w.r.t. addition C
• Transitive property D

• 
  A
• 
  B
• 
  C
• 
  D

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

If P is a whole number greater than 1, which has only P and I are factors. Then P is called

• Wholw number A
• Prime number B
• Even number C
• Odd number D

6 is

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

(a^-1)^-1=

• a^-1 A
• a B
• -a C
• None of above D

• real number A
• complex number B
• rational number C
• irrational number D

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

The set of rational number is represented by

• W A
• R B
• Q' C
• Q
  
  
  D

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

• 
  A
• 
  B
• 
  C
• 
  D

∀x,y∈R and x> 0 , y>0, if x > y

• 
  A
• 
  B
• 
  C
• None of these D

The negative square root of 9 can be written as:

• -√9 A
• √9 B
• √18 C
• -√18 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

√-1 b=

• b A
• 2 B
• 2b C
• None of these D

• Associate law of addition A
• Commutative law of addition B
• Additive identity C
• Closure law of addition D

π is ______

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

202.04 is an example of

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

In R, the additive inverse of a is

• 0 A
• 1 B
• -a C
• 1/a D

Name the property used in 4 + 9 = 9 + 4

• Associative property of addition A
• Commutative property of addition B
• Distributive property C
• Additive identity D

QUQ'

• 
  A
• 
  B
• 
  C
• 
  D

Multiplicative inverse of 0 is

• 0 A
• 1 B
• ±1 C
• Does not exist D

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

If a is any real number and a = a is called

• symmetric property A
• Trichotomy Properties B
• Transitive Property C
• Reflexive Properties D

∀x, y ∈ R, either x = y or x > y or x < y is

• Transitive property A
• Reflexive property B
• Trichotomy property C
• None of these D

The multiplicative inverse of 1 - 2i is

• 
  A
• 
  B
• 
  C
• 
  D