Out of the given answer figures, which is the correct one to replace the empty box? 
Which of the following is correct? 
Look at this series:
U32, V29, ____, X23, Y20, ....
What number should fill the blank?
Find the missing numbers: 
Select the option figure that will complete the series of question figures: 
Select the option that best suits the place of question mark (?) in the figure: 