ICSE ICSE Class 6 - CISCE Question Bank Solutions for Mathematics

State, whether the following are finite or infinite sets:

{No. of electrical appliances working in your house}

State, whether the following are finite or infinite sets:

{x : x is a whole number less than 20}

State, whether the following are finite or infinite sets:

{……, -5, -4, -3, -2}

State, whether the following are finite or infinite sets:

{x : x is a whole number greater than 20}

For the statement, given below, write True or False:

{…., -8, -4, 0, 4, 8} is a finite set.

For the statement, given below, write True or False:

{ – 32, – 28, – 24, – 20, ……….. , 0, 4, 8, 16} is an infinite set

For the statement, given below, write True or False:

{Even natural numbers divisible by 3} is the empty set

For the statement, given below, write True or False:

{.., -5, -3, -1, 1, 3, 5, ..} is a finite set

For the statement, given below, write True or False:

{x : x is a natural number less than 1} is the empty set

For the statement, given below, write True or False:

{Whole numbers between 15 and 16} = {Natural numbers between 5 and 6}

For the statement, given below, write True or False:

{Odd numbers divisible by 2} is the empty set

For the statement, given below, write True or False:

{x : x is positive and x < 0} is the empty set.

State, giving reasons, whether the following pair of sets is a disjointed set or an overlapping set:

A = {Girls with ages below 15 years} and

B = {Girls with ages above 15 years}

State, giving reasons, whether the following pair of sets is a disjointed set or an overlapping set:

C = {Boys with ages above 20 years} and

D = {Boys with ages above 27 years}

State, giving reasons, whether the following pair of sets is a disjointed set or an overlapping set:

A = {Natural numbers between 35 and 60} and

B = {Natural numbers between 50 and 80}

State, giving reasons, whether the following pair of sets is a disjointed set or an overlapping set:

P = {Students of class IX studying in I.C.S.E. Board} and

Q = {Students of class IX}

State, giving reasons, whether the following pair of sets is a disjointed set or an overlapping set:

A = {Natural numbers multiples of 3 and less than 30} and

B = {Natural numbers divisible by 4 and between 20 and 45}

State, giving reasons, whether the following pair of sets is a disjointed set or an overlapping set:

P = {Letters in the word ‘ALLAHABAD’} and

Q = {Letters in the word ‘MISSOURI’}

Write all the factors of: 16

Write all the factors of: 21