Q. State whether the following statement is True or False.
All prime numbers are odd.

1. True
2. False

Q. State whether the following statement is True or False.
If an even number is divided by $2$, the quotient is always odd.

1. true
2. false

Q. Find the possible factors of $45$, $30$ and $36$.

Q. Write all the factors of the following number.
$24$.

Q. Write all the factors of the following numbers.
$15$.

Q. Write all the factors of the following number : $21$

Q. Write all the factors of the following number.
$27$.

Q. Write all the factors of the following number.
$12$.

Q. Write all the factors of the following number.
$20$.

Q. Write all the factors of the following number.
$18$.

Q. Write all the factors of the following number.
$23$.

Q. Write all the factors of the following number.
$36$.

Q. Write first five multiples of $5$.

Q. Write first five multiples of $8$.

Q. Write first five multiples of $9$.

Q. Match the items in column $1$ with the items in column $2$.

Q. Find all the multiples of $9$ upto $100$.

Q. Observe that $2\times 3+1=7$ is a prime number. Here, $1$ has been added to a multiple of $2$ to get a prime number. Can you find some more numbers of this type?

Q. What is the sum of any two odd numbers?

Q. What is the sum of any two Even numbers?