Page 219 - Mathematics_Form_Two

Chapter name

8. E = {Vowels of English alphabets} Exercise 7�2

9. A = { :xx = 2 , for nn ∈ } 1. (a) Finite (f) Empty

10. B = { :5 , for x n n∈ }or (b) Finite (g) Infinite

B = { : is a multiple of 5xx } (c) Infinite (h) Finite

FOR ONLINE READING ONLY
11. C { :xx= < 20, x∈  } (d) empty (i) Empty

12. D = { :xx = n 2 ,n∈ } (e) infinite

13. (a) Is a set because all members are 1. (a) Equivalent Mathematics for Secondary Schools
numbers. (b) Not equivalent

(b) It is not a set because stone is not
an animal. (c) Not equivalent
(c) Is a set because all members are 2. (a) A and B (b) H and J
vowels. 3. (a) Empty (d) Finite

(d) It is a set because all members are (b) Finite (e) Infinite
continents. (c) Empty (f) Infinite
(e) It is not a set because November
is a month while others are days. 7. (a) Empty
(b) Not empty
14. (a) P {, , }x yz=
(c) Empty
(b) D = {January, June, July} 8. Sets C and E
}
(c) F ={ {3, 5, 7, 11, 13, 17, 19 }
Exercise 7�3
15. (a) A = { : is a letter in the word PROBABILITYxx }
{ }
A = { : is a letter in the word PROBABILITYxx } 1. (a) {}, 1

(b) B =   : xx = 1 , n∈   (b) ∅
 n  (c) {}, {Tito , } {Tito, Juma }
} {Juma ,
(c) C = { : is a positive factor of 9xx }
1. (a) 16

16. (a) A= { 3, 2, 1,0,1,2,3−− − } (b) 128
(c) 1
(b) {P, R, T, I, N}
2. B⊆ A
 12 3 
(c) C =  ,,  4. A ⊆ D
 2 5 10 
5. C⊆ A

213
Student's Book Form Two

11/10/2024 20:15:03
MATHEMATIC F2 v5.indd 213 11/10/2024 20:15:03
MATHEMATIC F2 v5.indd 213