Chapter 3 – Playing With Numbers

The LCM of 12 and 16 is:

What are the numbers which have more than two factors called?

The sum of two odd and one even numbers is

The number which is divisible by 5 is:

The HCF of 12 and 40 is:

Every ______ of a number is greater than or equal to that number.

What is the H.C.F. of two co-prime numbers?

The LCM of 12, 15, 45 is:

Find the HCF of 27, 63.

______ is the smallest prime number which is even.

If a number is divisible by 10, then which of the following can be its one’s digit?

The value of 10 + 40 ÷ 8 × 2 – 9 is:

The number which is divisible by 3 is:

The only prime number which is also even is

Which of the following is the L.C.M. of 36 and 72?

A prime number is a number which:

Which of them is composite number?

Which of them is prime number?

The value of 18 – 3 × 4 + 1 is:

Prime factors of 45 are:

Which of the following is the prime factorisation of 140?

Which is the number that is neither prime nor composite?

The common factors of 24 and 40 are:

Value of 30 + 14 ÷ 2 is:

901153 is divisible by ___.

If a number is divisible by 2 and 3 both then is divisible by

Which of the following numbers is a prime number?

The smallest prime number is:

Which of these numbers is a factor of every number?

Number of factors of a given number are _______.

What is the H.C.F. of 120, 144 and 216?

Every prime number except ______ is odd.

What are the numbers which are multiples of 2 called?

The number which is divisible by 2 is:

The LCM of 8 and 6 is:

The largest three digit number which is exactly divisible by 3 is:

_____ is the factor of 68.

Choose the maximum consecutive numbers less than 100 so that there is no prime number between them.