Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.
cd_ab_cd_abb_dda_b

5, 7.5, 12.5, 22.5, ?

Rearrange the jumbled letters to make a meaningful word and then select the one which is different.

In the following question, select the word which cannot be formed using the letters of the given word.
CAPABILITIES

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
 DAF, FED, HIB, ? 

Which letter-cluster will replace the question mark (?) to complete the given series?

MU, NE, PX, QF, SA, TG, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
DP, EY, FJ, ?

Which of the following words will be at third place in Dictionary ?