Ordinal Number

1st=first                               24th=twenty fourth                        47th=forty seventh

2nd=second                       25th=twenty fiveth                         48th=forty eighth

3rd=third                             26th=twenty sixth                           49th=forty nineth                                                           

4th=fourth                          27th=twenty seventh                     50th=fiftieth

5th=fifth                              28th=twenty eightht

6th=sixth                             29th=twenty nineth

7th=seventh                      30th=thirtieth

8th=seventh                      31st=thirty first

9th=ninth                            32nd=thirty second

10th=tenth                         33rd=thirty third

11th=eleventh                  34th=thirty fourth

12th=twelfth                     35th=thirty fifth

13th=thirteenth                36th=thirty sixth

14th=fourteenth              37th=thirty seventh

15th=fifteenth                  38th=thirty eighth

16th=sixteenth                 39th=thirty nineth

17th=seventeenth          40th=fortieth

18th=eighteenth              41st=forty first

19th=nineteenth              42nd=forty second

20th=twentieth                43rd=forty third

21st=twenty first             44th=forty fourth

22nd=twenty second     45th=forty fifth

23rd=twenty third           46th=forty sixth