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

BOND, FKRZ, JGVV, NCZR, ?

If "P" denotes "multiplied by", "R" denotes "subtracted from", "S" denotes "added to" and "Q" denotes "divided by", then which of the following equation is true?

Pointing towards a lady, a boy says, “She is the daughter of the woman who is the mother of the husband of my mother”. How is the lady related to the boy?

Direction : Study the following information to answer the given questions:
A word and number arrangement machine when given an input line of words and numbers rearranges them following a particular rule. The following is an illustration of input and rearrangement.
Input : 52 peak 91 snow freeze 46 cold 15 high 31 73 trek
Step I : 15 52 peak snow freeze 46 cold high 31 73 trek 91
Step II: 15 31 52 peak snow freeze 46 cold high trek 73 91
Step III: 15 31 46 peak snow freeze cold high trek 52 73 91
Step IV: 15 31 46 cold peak snow freeze high trek 52 73 91
Step V : 15 31 46 cold peak freeze peak snow high trek 52 73 91
Step VI : 15 31 46 cold freeze high peak snow trek 52 73 91
Step VI is the last step of the rearrangement. As per the rules followed in the above steps, find out in each of the following questions the appropriate steps for the given input.
Input : 67 hot sun 19 best 83 ice 49 ace 77 cut 37
In step IV, which of the following word/number would be on 7^th position (from the right)?

365 : 90 : : 623 : ?

In the following question, Letter pair is given and one Letter group is missing from one pair. Choose the correct option.
BDF: GIK:: MOQ:? 

Directions: In the following question four words have been given, out of which three are alike in some manner and the for one is different. Choose out the odd one.

Directions. Read the following information carefully and answer the questions given below it:
Seven boxes are placed on one above another in the stack formation. Box N is kept immediately below V. Three boxes are placed between N and L. Only two boxes are kept between L and M. S is kept at one of the positions above M. More than three boxes are kept between S and K. B is kept immediately above K.

Which box is kept at the top position?