# TMA4/ECO255 – Mathematics For Economist I

TMA Quiz Questions
TMA: TMA4/ECO255
Matric Number:  SCORE=9.00
ECO255 – Mathematics For Economist I
Mrs. Odishika Vivian Anietem (vodishika@noun.edu.ng )
1 An exponent is a mathematical notation that implies the number of times a number is to be multiplied by
 itself 2 3 1
2 Which of these options is not a simplified form of √180
 √2x2x3x3x5 2×3 √5 6 √5 √ 2×5 x2 x4
3 The Cartesian product of X and Y is denoted by
 X ∪ Y X /Y X∩ Y X x Y
4 Out of 26 students in a class, 14 are taking Maths lessons, 10 English and 5 Economics lessons. Out of this number, 4 are taking Maths and English, 3 Maths and Economics, and 1 English and Economics.  If no one is taking all 3 courses(together), how many student(s) are not taking any of the three courses?
 8 5 6 3
5 In logarithm, “ln” denotes natural logarithm and it is a base
 e log b log d log c log
6 The respective value of x and y in this problem: 2x + y = 9 …..(1) , 3x -y = 16 ………(2) are
 1, -5 1, 5 5,-1 5,1
7 If the discriminant in a quadratic equation is positive, then the quadratic equation has
 three solutions one solution no solution two solutions
8 For the sets {9,10,11} and (10,11,12}, the symmetric difference set is
 {9,10} {10,11 } {9,11} {9,12}
9 A set of all the subsets of a set is called a
 power set strong set complete set mighty set
10 Finding an integral is the reverse of finding a/an
 calculus derivative inverse deferential
11 The value of 2 raised to the power -3 is
 -0.125 0.125 -8 8
12 The respective value of x and y in this problem : 2x -3y =-2 …(1) and 4x + y = 24….(2), are
 4,5 3,2 5,4 2,3
13 The name quadratic comes from
14 In the quadratic formula, (b2 – 4ac) is usually referred to as the
15 In completing the square in y = 3×2 – 12x – 7, the value of ad square is
 19 12 -12 -19
16 In set theory, the symbol{U} represents a/an
 empty universal set union set subset
17 In set theory the symbol of the null set is
 ∅ o U
18 When logarithm is written without a base it is usually assume to be in base
 1 5 e 10
19 What is the value of log4 1/256
 -3 3 4 -4
20 One of the following is not a rule of integration
 constant rule power rule additive rule difference rule
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