Objective Questions

-------------------

.. A mininum of 8 questions here (along with answers)

1. In Python a block is represented by

   a. Curly braces

   #. Begin and End keywords

   #. Indentation

   #. Curly braces + Indentation

   #. All of the above

Answer: Indentation

2. Indentation is not mandatory in Python

   a. True

   #. False

Answer: False

3. A ``for`` loop in Python,

   a. is a simple iterator

   #. is a condition based loop

   #. can iterate only over integer list of elements

   #. All of the above

Answer: is a simple iterator

4. ``range()`` function can generate negative numbers

   a. True

   #. False

Answer: True

5. ``range(a,b)`` function returns,

   a. A tuple of elements from a to b including a and b

   #. A tuple of elements from a to b excluding b

   #. A list of elements from a to b including a and b

   #. A list of elements from a to b excluding b

Answer: A list of elements from a to b excluding b

6. ``linspace(1,100,2)`` and ``range(1,100,2)`` produces the same output,

   a. True

   #. False

Answer: False

7. What is the output of the below code snippet?

   ::

     y = 1

     for x in range(21):

         y*=x

     print y

   a. Product of natural numbers up to 20(including)

   #. Product of natural numbers up to 21(including)

   #. Zero

   #. Error

Answer: Zero

8. What is the output of the below code snippet?

   ::

    y = 1

    for x in range(1,21):

        y*=x

    print y

   a. Product of natural numbers up to 20(including)

   #. Product of natural numbers up to 21(including)

   #. Zero

   #. Error

Answer: Product of natural numbers up to 20(including)

9. What is the output of the below code snippet?

   ::

    y = 1

    for x in range(1,21)

        y*=x

    print y

   a. Product of natural numbers up to 20(including)

   #. Product of natural numbers up to 21(including)

   #. Zero

   #. Error

Answer: Error

Larger Questions

----------------

.. A minimum of 2 questions here (along with answers)

1. Write a python script to calculate the sum of the first 1000

    natural numbers?

2. Write a python script to find out prime numbers up to 500.

    [`hint`: a number ``A`` which is divisible by only ``1`` and ``A``

    is a prime number.]

3. Write a python script to find out the difference between the

    square of sum of first 100 natural numbers and sum of squares of

    first 100 natural numbers.