The positions of the letters according to the English alphabet series:

The pattern for this code is as follows;

• First three letters opposite alphabet - 2 = Alphabet
• Middle two letters opposite alphabet -1 = Alphabet
• Last three letters opposite alphabet + 2 = Alphabet

Given:

"HOSPITAL" is written as "FJQQJQBI"

Similarly;

"PATIENTS" be written as

Hence, "EXIUQJIO" is the correct answer.

Additional Information

Shortcut to remember the reverse positional letters.

The mirror image of this image is:

Hence, the correct answer is "Option (2)".

Concept:

The logic followed here is :-

Difference in place value is same.

Check from option,

Option 1, # = LKY, % = MMJ

Option 2, # = MKO, % = MMJ 

Option 3, # = GJO, % = MPU

Option 4, # = POL, % = MLO

So, in option 3 difference is same.

Hence, the correct answer is "Option 3".

The code of the letters according to the question:

Upon decoding the options, we get:

1) 7, 4, 5, 3 8, 6 → MELCUS

2. 6, 8, 7, 4, 5, 3 → SUMELC

3. 6, 8, 5, 7, 4, 3 → SULMEC

4. 7, 8, 6, 3, 5, 4 → MUSCLE

Among the above four words, 'MUSCLE' is the only meaningful word.

Hence, "option (4)" is correct.

Family Chart:

Family Tree:

Bheem is the maternal grandfather of Mala.

Hence, the correct answer is "Maternal Grandfather".

The position of letters according to the English alphabet series:

The pattern followed here is as follows:

'FEATURE' is written as 'ZIUXOVY'

And,

'CONSULT' is written as 'WSHWOPN

Similarly,

'PROMISE' is written as '?'

Hence, "JVIQCWY" is the correct answer.

Original number : 

7 3 4 6 2 8 5

Ascending order :

2 3 4 5 6 7 8

Positional distance between 3 and 4 are same in both arrangements.

Therefore, Option 3 is the correct answer.

The pattern followed is:

Hence, the correct answer is "185".

Persons: P, Q, R, S, T, U and V

1. P is sitting at the centre of the row.

2. Between P and Q only one person sits.

3. S sits second from the left corner.

4. Between U and T only one person sits and T at the right corner.

5. R do not sit in any corner.

Hence, “U” is sitting between P and Q.

The logic followed here is:

Logic: (First number²) - 10 = Second number.

Now,

For, 11 : 111

⇒ (11²) - 10 = 121 - 10 = 111.

For, 19 : 351

⇒ (19²) - 10 = 361 - 10 = 351.

Similarly, for 13 ∶ ?

⇒ (13²) - 10 = 169 - 10 = 159.

Hence, the missing number is "159".