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

202.04 is an example of

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

• -3 -2i A
• 3 +2i B
• 1 + 2i C
• 1 - 2i D

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

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

If in a set of real no a is multiplicative identity then

• a,a = a² A
• a,a = 1 B
• a,a = 0 C
• None of these D

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

The order axioms are satisfied by set of

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

A subset of set of complex number whose elements are of the form (a,0) is called

• Real number A
• Complex number B
• Rational number C
• Irrational number D

If z=(x,y) then z has no multiplicative inverse when

• x ≠ 0, y = 0 A
• x = 0, y = 0 B
• x = 0, y ≠ 0 C
• None of these D

√-1 b=

• b A
• 2 B
• 2b C
• None of these D

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

• 
  A
• 
  B
• 
  C
• 
  D

• Commutative property of addition A
• Closure property of addition B
• Additive inverse C
• Associative property w.r.t. to addition 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

The conjugate of √5 i is

• √5 A
• -√5 i B
• i C
• 5i D

• 1 A
• 3 B
• 2-i C
• -1 D

2.333....is a

• Irrational no A
• Complex no B
• Rational no C
• None of these 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

2/9,5/7∈ R,(2│9)(5│7)=10/63∈R this property is called

• Associative property A
• Identity property B
• Commutative property C
• Closure property w.r.t multiplication D

1.4142135... is ______

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

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

• 
  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

(a^-1)^-1=

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

In R the right cancellation property w.r.t. addition is

• 
  A
• 
  B
• 
  C
• 
  D

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

If Z₁ = 1+ i, Z₂ = 2+3i , then |Z₁ -Z₂| =?

• √5 A
• √7 B
• -1-2i C
• √3 D

6 is

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

24 can be written as a product of

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

The additive inverse of 0 is

• 1 A
• -1 B
• 0 C
• Does not exist D

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

If z₁ = (a,b), z₂=(c,d), then z₁ z₂ = -------------------

• (ac,bd) A
• (ac+bd, ad-bc) B
• (ac-bd , ad+bc) C
• (ac-bd , ad-bc) D