4. What is the problem with the following code fragments ?

i)
a = 3
    print (a)
b = 4
    print (b)
s = a + b
    print (s)

# Different indentation level for the same block of code

ii)
name = "Prejith"
age = 26
print ("Your name & age are ", name + age)

# name is a string and age is an integer, they can not be added

iii)
a = 3
s = a + 10
a = "New"
q = a / 10

# a has been reassigned to a string, it can't be divided