The following questions are based on the alphabet series $A$ to $Z.$

Which letter is eighth to the left of sixteenth letter from the right end?

Which letter cluster will replace the question mark (?) in the following series?
CGE, HJI, LPN, SUT, ?

Select the letter-cluster that can replace the question mark (?) in the following series.

FIY, HLD, JOI, LRN, NUS, $?$

Which letter will replace the question mark (?) in the following series?

B, D, G, I, L, ?, Q

Three of the following four letter-clusters are alike in a certain way and one is different.

Select the odd one.

Select the option that is related to the third term in the same way as the second term is related to the first term.

DEMOGRAPHY : EDOMHSPAYH ∷ BACKGROUND : ?

If the following words are arranged as per their order in the English dictionary, which word will fifth in the sequence?

1. Weekly
2. Weather
3. Weird
4. Weaver
5. Weight
6. Wielded

Select the letter-cluster that can replace the question mark (?) in the following series.

EFY, FID, GLI, HON, IRS, ?

Select the option that is related to the third term in the same way as the second term is related to the first term.

CANOPY : BCKSKE ∷ WARDROBE : ?

Select the option that will fill in the blank and complete the given series.

DXB, GSI, JNP, MIW, _____

 In the word "DOUBLE" two letters are such that number of letters between those two letters is as many as numbers of letters of alphabet. Find those two letters.

(A) B, E

(B) E, U

(C) O, L

(D) D, B