There are five single digit even numbers. 

First even number is $2$ and first odd number is $1$. Find out the second even number and second odd number.

Who am I $?$

I am less than the product of $2$ and $3$. I am an even number. I am not the number $2$.

Write '$\mathrm{E}$' (for even) or '$\mathrm{O}$' (for odd) to the given number. Look at the digit in the ones place and decide.

$64$

First even number is $2$ and first odd number is $1$. Find out ${100}^{\mathrm{th}}$ even number.

Write '$\mathrm{E}$' (for even) or '$\mathrm{O}$' (for odd) to the given number. Look at the digit in the ones place and decide.

$21008$

Select the even number.

First even number is $2$ and first odd number is $1$. Find out ${50}^{\mathrm{th}}$ even number and ${50}^{\mathrm{th}}$ odd number.

Write '$\mathrm{E}$' (for even) or '$\mathrm{O}$' (for odd) to the given number. Look at the digit in the ones place and decide.

$704$

First even number is $2$ and first odd number is $1$. Find out tenth odd number if tenth even number is $20$.