ICSE ICSE Class 7 - CISCE Question Bank Solutions

Express the following sets in roster form:

S = {Squares of first eight whole numbers}

Express the following sets in roster form:

Set of all integers between 7 and 94; which are divisible by 6.

Express the following sets in roster form:

C = {All composite numbers between 2 and 20}

Express the following sets in roster form:

D = Set of Prime numbers from 2 to 23.

Express the following sets in roster form:

E = Set of natural numbers below 30 which are divisible by 2 or 5.

Express the following sets in roster form:

F = Set of factors of 24.

Express the following sets in roster form:

G = Set of names of three closed figures in Geometry.

Express the following sets in roster form:

H = {x : x eW and x < 10}

Express the following sets in roster form:

J = {x: x e N and 2x – 3 ≤17}

Express the following sets in roster form:

K = {x : x is an integer and – 3 < x < 5}

Express the following sets in set- builder notation (form):

{3, 6, 9, 12, 15}

Express the following sets in set- builder notation (form):

{2, 3, 5, 7, 11, 13, ...}

Express the following sets in set- builder notation (form):

{1, 4, 9,16, 25, 36}

Express the following sets in set- builder notation (form):

{0, 2, 4, 6, 8, 10, 12, …. }

Express the following sets in set- builder notation (form):

{Monday, Tuesday, Wednesday}

Express the following sets in set- builder notation (form):

{23, 25, 27, 29, … }

Express the following sets in set- builder notation (form):

`{1/3, 1/4, 1/5, 1/6, 1/7, 1/8}`

Express the following sets in set- builder notation (form):

{42, 49, 56, 63, 70, 77}

Given: A = {x : x is a multiple of 2 and is less than 25}. Write the set in roster form. 

Given: B = {x : x is a square of a natural number and is less than 25}. Write the set in roster form.