BNU1501
ASSIGNMENT 2
SOLUTIONS
SEMESTER 1
2023
, BNU1501/Ass 2/2023
BNU1501
Basic Numeracy
Department of Decision Sciences
ASSIGNMENT 02
Semester 1 – 2023
Due Date: 23 March 2023
1
, Please work through the following study material before answering the assignment questions:
Study material: Chapters 1, 2 and 3 of the Study Guide
Question 1
Which one of the following is a prime number?
[1] 14 Note: Prime numbers all have only two factors, namely 1
and the number itself, for example, 19 has no other factors
[2] 15
than 1 and 19. Another such a number is 11. We can try to
[3] 18 list the prime numbers:
[4] 19 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, etc.
Question 2
What is the Lowest Common Multiple for 5, 9, and 15?
[1] 675
Determine the LCM of 5,9,15 using Method 1.
[2] 135 The multiples of 5 are: 5,10,15,20,25,30,35,40,45
The multiples of 9 are: 9, 18,27,36,45
[3] 45 The multiples of 15 are: 15, 30, and 45
[4] 15 It is clear from the above, that the lowest common
multiple 5,9,15 is 45
Question 3
Determine the lowest common multiple (LCM) of the denominators of the fractions and
[1] 20 In these fractions we have two denominators which are
[2] 40 4 and 10
[3] 24 The multiples of 4 are: 4, 8,12,16,20
The multiples of 10 are: 10, 20
[4] 80 It is clear from the above, that the lowest common
multiple 4 and 10 is = 20
Question 4
Determine the, LCM, of the following three terms: 3st, 4s2, 5t2.
[1] 60s3t3
You just multiply the three terms to get the
[2] 30st answer: that is 3*4*5= 60
[3] 30s2t2 We have got option 1 and 4, but here we need the
lowest common factor
[4] 60s2t2 Then the right answer is option 4
2
ASSIGNMENT 2
SOLUTIONS
SEMESTER 1
2023
, BNU1501/Ass 2/2023
BNU1501
Basic Numeracy
Department of Decision Sciences
ASSIGNMENT 02
Semester 1 – 2023
Due Date: 23 March 2023
1
, Please work through the following study material before answering the assignment questions:
Study material: Chapters 1, 2 and 3 of the Study Guide
Question 1
Which one of the following is a prime number?
[1] 14 Note: Prime numbers all have only two factors, namely 1
and the number itself, for example, 19 has no other factors
[2] 15
than 1 and 19. Another such a number is 11. We can try to
[3] 18 list the prime numbers:
[4] 19 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, etc.
Question 2
What is the Lowest Common Multiple for 5, 9, and 15?
[1] 675
Determine the LCM of 5,9,15 using Method 1.
[2] 135 The multiples of 5 are: 5,10,15,20,25,30,35,40,45
The multiples of 9 are: 9, 18,27,36,45
[3] 45 The multiples of 15 are: 15, 30, and 45
[4] 15 It is clear from the above, that the lowest common
multiple 5,9,15 is 45
Question 3
Determine the lowest common multiple (LCM) of the denominators of the fractions and
[1] 20 In these fractions we have two denominators which are
[2] 40 4 and 10
[3] 24 The multiples of 4 are: 4, 8,12,16,20
The multiples of 10 are: 10, 20
[4] 80 It is clear from the above, that the lowest common
multiple 4 and 10 is = 20
Question 4
Determine the, LCM, of the following three terms: 3st, 4s2, 5t2.
[1] 60s3t3
You just multiply the three terms to get the
[2] 30st answer: that is 3*4*5= 60
[3] 30s2t2 We have got option 1 and 4, but here we need the
lowest common factor
[4] 60s2t2 Then the right answer is option 4
2
