The question mark ends a sentence that asks something. It shows that a sentence is a question. Since question marks can be used in a variety of ways, they have a few rules you must memorize.
For the given sentence, the following rule applies:
Use a question mark after a sentence that asks a direct question.
Where do you live in Canada?
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.