Determine the prime factorisation of $840$

Important Questions on Playing With Numbers

MEDIUM

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 2

Write all the prime numbers between $1$ and $50$

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 3

Define a composite number.

MEDIUM

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 4

Find the LCM of $40,144$ and $180$

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 5

Write the first five multiples of $13$

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 6

Check if $401$ is a prime number

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 7

List all two digit prime numbers, in which both the digits are also prime numbers.

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 8

What is the least number divisible by $16,20$ and $24$?

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 9

Find the sum of all the prime numbers between $1$ and $20$