Number of letters skipped in between the adjacent letters in the series is equal. 

In each of the following questions, four numbers are given out of which three are like in some manner while one is different. Choose the one which is different from the rest three?

Question Figure

Direction: Select the related word from the given alternatives.

AZBY : CXDW :: EVFU:?

Select the option figure which when placed in the blank space of the problem figure would complete the pattern.

In a code language, RIVER is written a ERVRI how will TRAIN be written as in that language?

Find the odd number from the given alternative.

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)?