Mathematical Tools For Economics 1 Set 3

Bachelor of Arts in Economics (BA Economics)

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This set of Mathematical Tools for Economics 1 Multiple Choice Questions & Answers (MCQs) focuses on Mathematical Tools For Economics 1 Set 3

Q1 | A __________ is an ordered collection of objects.
  • relation
  • function
  • set
  • proposition
Answer: set
Q2 | The set B of odd positive integers less than 10 can be expressed by _____________
  • {1, 2, 3}
  • {1, 3, 5, 7, 9}
  • {1, 2, 5, 9}
  • {1, 5, 7, 9, 11}
Answer: {1, 3, 5, 7, 9}
Q3 | Power set of empty set has exactly _________ subset.
  • one
  • two
  • zero
  • three
Answer: one
Q4 | What is the Cartesian product of A = {1, 2} and B = {a, b}?
  • {(1, a), (1,
  • , (2, a), (b, b)} b) {(1, 1), (2, 2), (a, a), (b, b)}
  • {(1, a), (2, a), (1, b), (2, b)}
  • {(1, 1), (a, a), (2, a), (1, b)}
Answer: {(1, a), (2, a), (1, b), (2, b)}
Q5 | Which of the following two sets are equal?
  • a = {1, 2} and b = {1}
  • a = {1, 2} and b = {1, 2, 3}
  • a = {1, 2, 3} and b = {2, 1, 3}
  • a = {1, 2, 4} and b = {1, 2, 3}
Answer: a = {1, 2, 3} and b = {2, 1, 3}
Q6 | The set of positive integers is _____________
  • infinite
  • finite
  • subset
  • empty
Answer: infinite
Q7 | The value of ‘x’ in 3x – 4 = 7 is
  • 1
  • 11/3
  • 3/11
  • 7/12
Answer: 11/3
Q8 | On solving x/2 + 5/3 = -1/2, we get x =
  • -13/3
  • -3/13
  • 13/3
  • 3/13
Answer: -13/3
Q9 | In 15/4 – 7x = 9, x=
  • 4/3
  • ¾
  • -4/3
  • -3/4
Answer: -3/4
Q10 | Sum of two numbers is 84. One of the numbers is 20 more than the other. The smallernumber is
  • 12
  • 22
  • 32
  • 42
Answer: 32
Q11 | Variables of linear equation is implicitly raised to
  • first power
  • second power
  • third power
  • four power
Answer: first power
Q12 | Example of linear equation involving two variables is
  • 7x+3y+4z = 20
  • 6x+2y = 10
  • 8x = 2+10
  • 7a+8b+9c = 10+5
Answer: 6x+2y = 10
Q13 | In the linear equation 'ax+by = c' the a and b cannot be equal
  • to rational numbers
  • to one
  • to zero
  • set of even numbers
Answer: to zero
Q14 | Two variables x and y if involved in linear equation then the equation is
  • ax+by = c
  • ab+xy = c
  • ac+bx = y
  • ax+bc = y
Answer: ax+by = c
Q15 | The polynomial px2 + qx + rx4 + 5 is of type
  • linear
  • quadratic
  • cubic
  • biquadratic
Answer: biquadratic
Q16 | Identify the polynomial
  • x–2 + x–1 + 5
  • 3x2 + 7
Answer: 3x2 + 7
Q17 | The number of zeros of x2 + 4x + 2
  • 1
  • 2
  • 3
  • none of these
Answer: 2
Q18 | The polynomial of type ax2 + bx + c, a = 0 is of type
  • linear
  • quadratic
  • cubic
  • biquadratic
Answer: linear
Q19 | The value of k, if (x – 1) is a factor of 4x3 + 3x2 – 4x + k, is
  • 1
  • 2
  • –3
  • 3
Answer: –3
Q20 | The degree of polynomial is
  • 0
  • 2
  • 1
  • 3
Answer: 1
Q21 | If 3 + 5 – 8 = 0, then the value of (3)3 + (5)3 – (8)3is
  • 260
  • –360
  • –160
  • 160
Answer: –360
Q22 | . If value of 104 × 96 is
  • 9984
  • 9469
  • 10234
  • 11324
Answer: 9984
Q23 | The value of 5.63 × 5.63 + 11.26 × 2.37 + 2.37 × 2.37 is
  • 237
  • 126
  • 56
  • 64
Answer: 64
Q24 | The value of
  • 300
  • 500
  • 400
  • 600
Answer: 500
Q25 | If x + y = 3, x2 + y2 = 5 then xy is
  • 1
  • 3
  • 2
  • 5
Answer: 2
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