Ordinal numbers are those numbers which show the position of something in a series or list.
Eg:- First, second, third, fourth etc.
Ordinal numbers have `th’at the end of the number except first, second and third.
A series of balls are showing in the picture below-
Tell the position of every ball.
Position of red ball = First
Position of blue ball = Second
Position of purple ball = Third
Position of green ball = Fourth
Position of violet ball = Fifth
Position of pink ball = Sixth