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

Select the word pair that best represents a similar relationship to the one expressed in the given pair of words. (The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word)
 Tailor: Sewing machine

Directions: Study the following information carefully and answer the given questions: 

Eight friends A, B, C, D, W, X, Y and Z are sitting around a square table in such a way that four of them sit at four corners of the square while the other four sit in the middle of each side. The ones who sit at the four corners face outside while those who sit in the middle of the sides face inside.
C is an immediate neighbor of A, who faces the center. W sits second to the left of C. Y sits fourth to the left of W. Two persons sit between Y and D (either from left or right). C is not an immediate neighbor of D. B sits second to the right of D. X sits second to the right of B.

What is the position of Y with respect to D? 

In each of the following questions, certain pairs of words are given, out of which the words in all pairs except one, bear a certain common relationship. Choose the pair in which the words are differently related?

Select the c orrect combination of mathematical signs to replace the * signs and to balance the given equation.
 78 * 3 * 12 * 5 * 59 * 17 * 44 

Select the odd group of numbers. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.13 – Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

Option

In a certain code language, ‘NUMERICAL’ is written as ‘ICALRNUME’ and ‘SCATTERED’ is written as ‘EREDTSCAT’. How will ‘EXPLOSION’ be written in that language?

If I denotes ‘÷’, J denotes ‘×’, K denotes ‘−’ and L denotes ‘+’, then what will come in place of ‘?’ in the following equation?
 37 L 25 K (14 J 2) L (2 J 13) K (62 I 31) = ?