Select the number from among the given options that can replace the question mark (?) in the following series. 

Question figure.

Which of the following numbers will replace the question mark (?) in the given series?
 4, 9, 17, 30, 50, 81, 125, ?

Select the option that represents the correct order of the given words as they would appear in an English dictionary.

1 Thresh
 2 Threadbare
 3 Thrice
 4 Threw
 5 Threat

In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusion logically follows the given statements.

Statements:
 Some fingers are toes.
 Some toes are rings.
 Some rings are hands.

Conclusions:
 I. Some hands are toes.
 II. Some rings are fingers.
 III. Some hands are fingers.
 IV. Some fingers are rings.

Eight girls A, B, C, D, E, F, G and H are sitting in a row, facing towards the north (but not necessarily in the same order). Neither C nor D is at the extreme ends of the row. H is at the extreme right end of the row. Only E is sitting between D and F. Only G is sitting between F and H. C and A are the immediate neighbours of B.

Which of the following statements is/are correct?
 I. D is fourth to the left of H.
 II. D is the immediate neighbour of B.

In a certain code language, 'BALL' is coded as '27' and 'BACK' is coded as '17'. How will 'RACE' be coded in that language? 

Select the option that represents the correct order of the given words as they would appear in an English dictionary.
 1. Vantage
 2. Wherefore
 3. Uplift
 4. Various
 5. Variety
 6. Valor

Which letter cluster will replace the question mark (?) to complete the given series?
 ETRE, AZJG, WFBI, SLTK, ?