Python subjective question for competitive exam (25)

Q1.Operator overloading in python.

print(1+2)
print("ram"+"kumar")
print(3*4)
print("ram"*4)

Output
>>> 
==================== RESTART: C:/Users/Dell/Desktop/ss.py ====================
3
ramkumar
12
ramramramram

Q2.Evaluate postfix expression using stack.

op=set(['+','-','*','/','**'])
def evalexpre(exp):
    stack=[]
    for i in exp:
        if i not in op:
            stack.append(i)
        else:
            a=stack.pop()
            b=stack.pop()

            if i=='+':
                res=int(a)+int(b)

            elif i=='-':
                  res=int(a)-int(b)
            elif i=='*':
                  res=int(a)*int(b)
            elif i=='/':
                 res=int(a)/int(b)
            elif i=='**':
                 res=int(a)**int(b)

            stack.append(res)
    return(''.join(map(str,stack)))

exp=input("enter postfix expression")
print()
print(evalexpre(exp))

Output
>>> 
==================== RESTART: C:/Users/Dell/Desktop/ss.py ====================
enter postfix expression23+5*

25                 

Q3.Program to find lcm of two number.

def lcmcal(x,y):
    if x>y:
        greater=x
    else:
        greater=y

    while(True):
        if((greater % x==0)and(greater % y==0)):
            lcm=greater
            break
        greater+=1
    return(lcm)
                 
print(lcmcal(23,2))           
                  

Output
>>> 
==================== RESTART: C:/Users/Dell/Desktop/ss.py ====================
46                

Q4.Program to find hcf of two number.

def hcfcal(x,y):
    if x>y:
        small=y
    else:
        small=x

    for i in range(1,small+1):
        if((x%i==0)and(y%i==0)):
            hcf=i
          
    return(hcf)
                 
print(hcfcal(28,21))           
                  

Output
>>> 
==================== RESTART: C:/Users/Dell/Desktop/ss.py ====================
7                

Q5.Program to remove duplicate element from list.

l=[1,2,3,4,5,1,2,3]
tl=[]
for i in l:
    if i not in tl:
        tl.append(i)
l=tl
print(l)

Output
>>> 
==================== RESTART: C:/Users/Dell/Desktop/ss.py ====================
[1, 2, 3, 4, 5]