Question

EXERCISE 13(A)
13.5
CARDINAL
The cardinal
Thus, it a set
no colector er tople in your colony.
writing n(A) = 5.
Similarly, it
th
2 Stare whether true or false
1. Find whether on each of the following collections represent a set:
The collector 200 students in your school
The collecon of the numbers between 30 and 45.
The colecton of interes ng books in your school library.
The collection of books in the library and are of your interest
Set as some as the set (5. 4. 8) and the set (8. 4,5).
Seisand (22. mo. n. n) are same.
Set of emers in the word suchismita' is {s, u. c, h, i, m. 1, al.
(1) Serretes in the word MAHMOOD is [M, A, H, O. D).
insen the moo or to make each of the following true :
(ii) 18 ....B
(vii) (6 + 8) .... A
TYPES
13.6
1.
Finite set
A set is sal
3. Les 8 10 12) and set B = (3. 9. 15. 18).
(0) (0 - 3
For example:
(i) S = Set
(i) P = {0,
2.
Infinite s
CA set is
elements in it.
For example
(i) P = Se
(ii) B = {
m) 10 B
(W) (15-9-B (V) 12 ... A
4. Express each of the following sets in roster form:
Set of ood whole numbers between 15 and 27.
A = Set of leces in the word "CHITAMBARAM
(C) B = [Al even numbers from 15 to 26)
(iv) P=(x:x is a vowel used in the word "ARITHMETIC)
(V) S = (Squares of first eight whole numbers)
(n) Set of all integers between 7 and 94 which are divisible by 6.
(v) C = (Al composite numbers between 2 and 203
(vm) D = Set of prime numbers from 2 to 23.
(2) E = Set of natural numbers below 30 which are divisible by 2 or 5.
(2) F= Set of factors of 24.
(2) G = Set of names of three closed figures in Geometry.
(xii) H = (x:xe W and x < 10)
(xiii) J = (x:xe N and 2x - 3 < 17}
(XIV) K = (x:x is an integer and - 3 < x < 5)
3.
Empty
The se
The er
Danish lette
Thus,
For empt
only one
Therefore
Some ex
5. Express each of the following sets in set-builder notation (form) :
0 (3.6, 9, 12, 15)
(n) [2, 3, 5, 7, 11, 13, ...)
(in) (1.4, 9, 16, 25, 36)
(iv) (0, 2, 4, 6, 8, 10, 12,...}
(v) (Monday, Tuesday, Wednesday) (vi) (23, 25, 27, 29, ...)
1 1 1 1 1
(vii)
3 4 5 6 7 8
(viii) (42, 49, 56, 63, 70, 77)
() LE
S
h
(ii)!
6. Given : A = (x:xis a multiple of 2 and is less than 25
B = { x:xis a square of a natural number and is less than 25 )
C = { x:xis a multiple of 3 and is less than 25 }
D = { x: x is a prime number less than 25 )
Write the sets A, B, C and D in roster form.
1.6
2.
3.7
Set Cc
140​

Answer 1

Answer:

The concept of set is a very basic one. ... In fact, any way of collecting things into a whole results in a set; the things collected are the elements of the set. To say that a set is determined by its elements is to say that any set is completely given by specifying what its elements are.

Step-by-step explanation: