Even and Odd Numbers Part 1

The number of objects is even if they can be matched in pairs.

The number of objects is odd if they cannot be matched in pairs.

For example: Let's identify if the number of triangles given below is even or odd.

1

Make pairs of the given triangles.

 

1a
 

Here, we notice that the given triangles make 5 complete pairs.
 

So, the number of given triangles is even.
ds

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

Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.