Prime Factors

IMPORTANT

Prime Factors: Overview

This topic covers concepts, such as, Prime Numbers, Prime Factorisation of a Number, Factor Tree, Factors of Numbers, Multiples of Numbers, Common Factors of Numbers, Common Multiple of Numbers & Prime Factors etc.

Important Questions on Prime Factors

EASY
IMPORTANT

What are the prime factors of 24?

MEDIUM
IMPORTANT

Which of the following statement is correct?

15 is a common multiple of 3 and 15.

MEDIUM
IMPORTANT

Write whether the given statement is correct or wrong?

12 is a common multiple of 2 and 3.

EASY
IMPORTANT

Check whether 10 is a common multiple of 2 and 5.

MEDIUM
IMPORTANT

Find the prime factorisation of the following number by division method?

48

MEDIUM
IMPORTANT

1 is a factor of every number.

MEDIUM
IMPORTANT

1 is the smallest prime number.

MEDIUM
IMPORTANT

Every prime number except _____ is odd.

MEDIUM
IMPORTANT

Circle the number that is a common multiple of 5 and 3.

40   70    60

MEDIUM
IMPORTANT

Write the multiples of 3 that lie between 10 and 25.

MEDIUM
IMPORTANT

Write the prime factorisation and prime factors of 48.

MEDIUM
IMPORTANT

Find out two factors of 42 whose sum is 23.

EASY
IMPORTANT

The prime factorization of 15 is

EASY
IMPORTANT

The prime factors of 6 are

EASY
IMPORTANT

Which is the smallest number the following are factors of ?

2, 7, 3

MEDIUM
IMPORTANT

Write a multiple of 8 which is also a multiple of 7.

EASY
IMPORTANT

Find the prime factors and write the prime factorisation of the number 60.

EASY
IMPORTANT

Find the prime factors and write the prime factorisation of the number 52.

EASY
IMPORTANT

Find the prime factors and write the prime factorisation of the number 48.

EASY
IMPORTANT

Find the prime factors and write the prime factorisation of the number 42.