ICSE ICSE Class 7 - CISCE Question Bank Solutions

Given: C = {x : x is a multiple of 3 and is less than 25}. Write the set in roster form. 

Given: D = {x: x is a prime number less than 25}. Write the set in roster form. 

State, if the following pair of a set, is disjoint:

{0, 1, 2, 6, 8} and {odd numbers less than 10.

State, if the following pair of a set, is disjoint:

{birds} and {tress}

State, if the following pair of a set, is disjoint:

{x : x is a fan of cricket} and

{x : x is a fan of football}

State, if the following pair of a set, is disjoint:

A = {natural numbers less than 10} and

B = {x : x is a multiple of 5}

State, if the following pair of a set, is disjoint:

{people living in Calcutta} and

{people living in West Bengal}.

State whether the given pair of set is equal or equivalent.

A = {first four natural numbers} and
B = {first four whole numbers}

State whether the given pair of set is equal or equivalent.

A = Set of letters of the word “FOLLOW” and
B = Set of letters of the word “WOLF”.

State whether the given pair of set is equal or equivalent.

E = {even natural numbers less than 10} and

O = {odd natural numbers less than 9}

State whether the given pair of set is equal or equivalent.

A = {days of the week starting with letter S} and

B = {days of the week starting with letter T}. 

State whether the given pair of set is equal or equivalent.

M = {multiples of 2 and 3 between 10 and 20} and

N = {multiples of 2 and 5 between 10 and 20}.

State whether the given pair of set is equal or equivalent.

P = {prime numbers which divide 70 exactly} and

Q = {prime numbers which divide 105 exactly}

State whether the given pair of set is equal or equivalent.

A = {0², 1², 2², 3², 4²} and B = {16, 9,4, 1, 0}.

State whether the given pair of set is equal or equivalent.

E = {8, 10, 12, 14, 16} and

F = {even natural numbers between 6 and 18}

State whether the given pair of set is equal or equivalent.

A = {letters of the word SUPERSTITION} and

B = {letters of the word JURISDICTION}.

Examine if the following set is the empty set:

The set of triangles having three equal sides.

Examine if the following set is the empty set:

The set of lions in your class.

Examine if the following set is the empty set:

{x + 3 = 2 and x ∈ N}

Examine if the following set is the empty set:

P = {x : 3x = 0}