1. Match the roster form with set builder form.
2. Match roster forms with the set builder form
(i) { P, R, I, N, C, A, L } (a) {x:x is a positive interger and is a divisor of 18}
(ii) {0} (b) {x:x is an integer and x²-9=0}
(iii){1,2,3,6,9,18} (c) {x:x is an integer and x+1=1}
(iv){3, -3} (d) {x:x is a letter of the word PRINCIPAL}
3. If A = {a, b, c, d}. How many subsets does the set A have ?
4. 'P' is the set of factors of 5, 'Q' is the set of factors of 25 and 'R' is the set of factors of 125. Which one of the following is false ?
A. P ⊂ Q B. Q ⊂ R C. R ⊂ P D. P ⊂ R
5. State whether each of the following sets is finite of infinite.
(i) The set of letters in the English alphabet.
(ii) The set of lines which are parallel to the X-axis.
(iii) The set of numbers which are multiplies of 5.
(iv) The set of circles passing through the 0rigin (0,0)
6. Set of first five positive integers ....
7. Set having digits of Ramanujan Number
8. B is a set of having only ౩౦ days
9. Which following is a collection of things that have something in common or follow a rule
10. which are true and which are false
11. Which of the following collection is a set ?
A. All good students in your class
B. All boys in your class
C. Ten most talented writers
D. A team of 11 best cricket batsmen.
12. The elements of G= all the factors of 20.
A. {1,2,4,5,10,20} B. {1,2,3,4,5,8,10,20} C. {10,20,30,40} D. {0,20}
13. Which of the following are true ?
A. { } = ø B. ø = 0 C. 0 = { 0 } D. ø = µ
14. A set which does not contain any elements
15. Set of first five cubes
16. set having multiples of 5 which are greater than 100 and less than 125
17. Which of the following are false given that A={1,2,3,4}
A. 2∈A B. 2∉{1,2,3,4} C. A⊂{1,2,3,4} D. {2,3,4} ⊂ {1,2,3,4}
18. which of the following are null sets
(i) Set of integers which lie between 2 and 3.
(ii) Set of natural numbers that are smaller than 1.
(iii) Set of odd numbers that leave remainder zero, when divided by 2.
19. Roster form of {x:x is a vowel of English}
20. Stater which of the following sets are finite or infinite.
