$($a$)$ Describe the relationship between a class and objeci? Write a program which shows how to define a class, how to access member functions and how to creale and access objects in python programming.

$(3)$

G$)$ With the help of an example, differentiate between Series and DataF rame in context of Panadas.

Explain your answer.

$($C$)$ Find the output of the following code:

var $=7$

White var $>0$:

print$($CCurrent variable values, var$)$

var $=$ var $-1$

if var$=3$ :

break:

clse:

if var$=6$ :

var $=$ var $-1$

continue

print$("$Good byel"$)$

$($d$)$ Consider the following string mySubject:

$(3)$

mySubject $=$ "Operational Research

What will be the output of the following string operations?

i$.$ print$($mySubject$[0$:Ien$($ntySubjoci$)])$

ii$.$ print$($mySubject$[$::$2])$

iii. print$($mySubject$[$len$($mySubject$)-1])$

if print$($mySubject$[$: :$-2)$

v$.$ print$($mySubject$[$:$3]+$ mySubject$[3$:$])$

vi$.$ print$($mySubject$.$swapcase$())$