Verbal Reasoning - Mental Ability Questions

Here HAT is coded as jcv

=> Leaving a letter in between i.e, after H leave i write j in small letters

In the same way, A => c, T => v

Similarly for GUN => iwp 

When the second alphabets in each of the words are changed to the next alphabet in the English alphabetical order, we have

AOD    FPR    TIE    BJG    SVM

Clearly, there two words having  two vowels. These words are AOD and TIE

Letters in the word           Letters in the alphabet

$$\begin{gathered} CHA \\ - - \end{gathered}$$                            $$\begin{gathered} CBA \\ - - \end{gathered}$$

$$\begin{gathered} RS \\ -- \end{gathered}$$                             $$\begin{gathered} RS \\ -- \end{gathered}$$       

C is wife of B. So, one couple is BC. Now, D in grandmother of A, B is the son of D and his wife C is the mother of F. SO, D is also the grandmother of F But F is the granddaughter of E. 

So, E is the grandfather of F and the husband of D. Thus, DF is another couple 

6-3 = 3 9-4 = 5 (3x5=15) 15=O
7-2 = 5 7-3 = 4 (5x4=20) 20=T
9-6 = 3 5-1 = 4 (3x4=12) 12=L

Similarly, 4-1 = 3 8-5 = 1 (3x1=3) 3=C

The letter of the word are written in a reverse order and then each letter is moved one step backward to obtain the code.

A person or animal must take in oxygen for respiration to occur. A mouth (choice a) is not essential because breathing can occur through the nose. Choices b and d are clearly not essential and can be ruled out.