Q3 of 71 Page 14

Write the following sets in Set-Builder form

i. The set of all positive even numbers


ii. The set of all whole numbers less than 20


iii. The set of all positive integers which are multiples of 3


iv. The set of all odd natural numbers less than 15


v. The set of all letters in the word ‘computer’

i. {x : x is a even number and x>0}


ii. {x : x is a whole number and x<20}


iii. {x : x is a positive integer and multiple of 3}


iv. {x : x is a odd natural number and x<15}


v. {x : x is a letter in the word ‘computer’}


More from this chapter

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1

Which of the following are sets? Justify your answer.

i. The collection of good books


ii. The collection of prime number less than 30


iii. The collection of ten most talented mathematics teachers.


iv. The collection of all students in your school


v. The collection of all even numbers.

 2

Let A = {0, 1, 2, 3, 4, 5}. Insert the appropriate

i. 0 ____ A


ii. 6 ____ A


iii. 3 ____ A


iv. 4 ____ A


v. 7 ____ A

 4

Write the following sets in Roster form

i.


ii.


iii. C = {x : x is a prime number and a divisor of 6}


iv.


v.


vi.

5

Write the following sets in Descriptive form

i. A = {a, e, i, o, u}


ii. B = {1, 3, 5, 7, 9, 11}


iii. C = {1, 4, 9, 16, 25}


iv. P = {x : x is a letter in the word ‘set theory’}


v. Q = {x : x is a prime number between 10 and 20}