Find the product of first natural, first whole and first prime number.

Write down separately the prime and composite numbers less than 20.

Is 27 a factor of 5427?

Write all the factors of the following number: 20

Write all the factors of the following number: 21

Smallest odd prime number

Quotient when zero is divided by any non-zero whole number

25

15

35

If the sum of the digits of a number is divisible by 3, then the number itself is divisible by 9.

A number with three or more digits is divisible by 6 if the number formed by its last two digits (i.e. ones and tens) is divisible by 6.

All even numbers are composite numbers.

Sum of two prime numbers is always even.

All prime numbers are odd.

Write all the factors of 32

Write five pairs of prime numbers less than 20, whose sum is divisible by 5.

The greatest 2-digit prime number is ___________

The LCM of 12 and 15 is __________

The common factor of 25 and 30 is ___________

A number for which the sum of all its factors is equal to twice the number is called a ________________number.

The smallest even number is__________

The LCM of 12, 24, 32 is

A number is divisible by 5 and 6. It may not be divisible by

State which of the following is correct prime factorisation of the numbers.

Which of the following is divisible by both 8 and 12?

Using divisibility tests, determine which of the following numbers is divisible by 2?

Find a 4-digit odd number using each of digits 1, 2, 4 and 5 only once such that when the first and last digits are interchanged, it is divisible by 4.