In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
c_e_cd_f_d_f

A series is given with one term  missing. Choose the correct alternative from the given ones that will complete that series.
DJ , EM , FP, ?

In the following question, find the missing letters in the given letters.
 5 , 11 , 17 , 25, 33, 43, ?

In the following question, find the missing letters in the given letters.
$$ {D\over 5},{G\over 9},{J\over 14},{M\over20},?$$

In each of the following questions, find the missing letters in the given letters.
AMV ,   FQX, KUZ , _?_

Fill in the blanks____
gfe_ig_eii_fei_gf_ii

Find the missing number-
56 , 90 , 132, 184 , 248 , ?

Select the figure that will come next in the following figure series.