Jaikishan and Premkishan Solutions for Exercise 1: Let us Practice

In the following question, a group of numbers/symbols followed by five combinations of letter codes is given. You have to find out which of the combinations correctly represents the group of numbers/symbols based on the given coding system and the conditions and mark that combination as your answer.

Conditions
(i) If the first and the last elements are odd numbers then their codes are to be interchanged. 
(ii) If an even number is immediately followed as well as immediately preceded by a symbol then that even number is to be coded as 'O'.
(iii) If the third element is a symbol then the first element is to be coded as the code of that symbol.
(iv) If the second last element is an odd number then the code of that odd number is to be interchanged with the code of the last element.
(Please Note) : All the elements have to be counted from left to right to fulfil the conditions.
Find the code of $97@+4$. 

In the following question, a group of numbers of symbols followed by five combinations of letter codes is given. You have to find out which of the combinations correctly represents the group of numbers of symbols based on the given coding system and the conditions and mark that combination as your answer.

Conditions:

(i) If the first and the last elements are odd numbers then their codes are to be interchanged. 
(ii) If an even number is immediately followed as well as immediately preceded by a symbol then that even number is to be coded as '$O$'.
(iii) If the third element is a symbol then the first element is to be coded as the code of that symbol.
(iv) If the second last element is an odd number then the code of that odd number is to be interchanged with the code of the last element.
(Please Note): All the elements have to be counted from left to right to fulfil the conditions.
$7 \# 6 8 \& 3$

In the following question, a group of numbers of symbols followed by five combinations of letter codes is given. You have to find out which of the combinations correctly represents the group of numbers of symbols based on the given coding system and the conditions and mark that combination as your answer.

Conditions: (i) If the first and the last elements are odd numbers then their codes are to be interchanged. 
(ii) If an even number is immediately followed as well as immediately preceded by a symbol then that even number is to be coded as 'O'.
(iii) If the third element is a symbol then the first element is to be coded as the code of that symbol.
(iv) If the second last element is an odd number then the code of that odd number is to be interchanged with the code of the last element.
(Please Note): All the elements have to be counted from left to right to fulfil the conditions.
$4 \# 5 \% 9 2$

In the following question, a group of numbers of symbols followed by five combinations of letter codes is given. You have to find out which of the combinations correctly represents the group of numbers of symbols based on the given coding system and the conditions and mark that combination as your answer.

Conditions: (i) If the first and the last elements are odd numbers then their codes are to be interchanged. 
(ii) If an even number is immediately followed as well as immediately preceded by a symbol then that even number is to be coded as 'O'.
(iii) If the third element is a symbol then the first element is to be coded as the code of that symbol.
(iv) If the second last element is an odd number then the code of that odd number is to be interchanged with the code of the last element.
(Please Note): All the elements have to be counted from left to right to fulfil the conditions.
$7 5 4 \% 2 \$$

Study the information below and answer the following question.
In a certain code language,
'Thin paper neatly folded' is written as $\text{'}@\mathrm{D}6, \%\mathrm{R}5, !\mathrm{N}4, ?\mathrm{Y}6\text{'}.$
'Four people from USA' is written as $\text{'}@\mathrm{M}4, \%\mathrm{E}6, \#\mathrm{A}3, @\mathrm{R}4\text{'}.$
'Urban development programme launched' is written as $\text{'}\%\mathrm{E}9, *\mathrm{T}11, \#\mathrm{N}5, \&\mathrm{D}8\text{'}.$
'Dhaya likes forties hero' is written as $\text{'}@\mathrm{S}7, \&\mathrm{S}5, *\mathrm{A}5, \$\mathrm{O}4\text{'}.$
The code for the word 'people' is?

Study the information below and answer the following question.
In a certain code language,
'Thin paper neatly folded' is written as $\text{'}@\mathrm{D}6, \%\mathrm{R}5, !\mathrm{N}4, ?\mathrm{Y}6\text{'}.$
'Four people from USA' is written as $\text{'}@\mathrm{M}4, \%\mathrm{E}6, \#\mathrm{A}3, @\mathrm{R}4\text{'}.$
'Urban development programme launched' is written as $\text{'}\%\mathrm{E}9, *\mathrm{T}11, \#\mathrm{N}5, \&\mathrm{D}8\text{'}.$
'Dhaya likes forties hero' is written as $\text{'}@\mathrm{S}7, \&\mathrm{S}5, *\mathrm{A}5, \$\mathrm{O}4\text{'}.$
The code $\text{'}*\mathrm{A}5\text{'}$ denotes which of the following word?

Study the following information carefully to answer the given question.
In a certain code language:
'work for earning money' is coded as $\text{'}\mathrm{Go}3 \mathrm{None}5 \mathrm{Xor}4 \mathrm{Farnin}7\text{'}.$
'like six years passed' is coded as $\text{'}\mathrm{Ti}3 \mathrm{Qasses}6 \mathrm{Zear}5 \mathrm{Mik}4\text{'}.$
'hence good amount received' is coded as $\text{'}\mathrm{Seceive}8 \mathrm{lenc}5 \mathrm{Hoo}4 \mathrm{Bmoun}6\text{'}.$
What is the code for 'last earning was money'?

Study the following information carefully to answer the given question.
In a certain code language:
'work for earning money' is coded as $\text{'}\mathrm{Go}3 \mathrm{None}5 \mathrm{Xor}4 \mathrm{Famin}7\text{'}.$
'like six years passed' is coded as $\text{'}\mathrm{Ti}3 \mathrm{Qasses}6 \mathrm{Zear}5 \mathrm{Mik}4\text{'}.$
'hence good amount received' is coded as $\text{'}\mathrm{Seceive}8 L\mathrm{enc}5 \mathrm{Hoo}4 \mathrm{Bmoun}6\text{'}.$
What is the code for 'hence always wrong hence'?