Which of the following letters will come in place of the question mark to complete the given series in the group?
KUCJ, NRFG, QOID, ?

What number comes next in the series?
1, 2, 3, 5, 8, ___

Which of the following will complete the series?
14 ,27 ,52 ,101, 198. ? 

Complete the series choosing the missing number:

2, 8, 3, 27, 4, ______

In the following question , a series is given with one terms missing . Choose the correct alternative from the given ones that will complete the series :

21 , 26 , 33 , 42 , 53 , ? 

Select the combination of letters that when sequentially placed in the gaps of the given letters series will complete the series.
H _ _ EPCK _ _ CDEP _ KFHC _ EPC _ F

Select the option that correctly fills in the blanks and complete the series.
441, 484, 529, 576, __

Find the next number in the series.
4, 9, 20, 43, ?