Register Now


Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.


Register Now

It will take less than 1 minute to register for lifetime. Bonus Tip - We don't send OTP to your email id Make Sure to use your own email id for free books and giveaways

10 Questions, 10 Minutes – SQL/R/Python – 3/100

1.What will the following code output?

>>> word=’abcdefghij’ 
>>> word[:3]+word[3:]

The output is ‘abcdefghij’. The first slice gives us ‘abc’, the next gives us ‘defghij’.

2.How will you convert a list into a string?

We will use the join() method for this.

>>> nums=['one','two','three','four','five','six','seven']
>>> s=' '.join(nums)
>>> s

‘one two three four five six seven’

3. How will you remove a duplicate element from a list?

We can turn it into a set to do that.

>>> list=[1,2,1,3,4,2] 
>>> set(list) 
{1, 2, 3, 4} 

4. Explain the //, %, and ** operators in Python.

The // operator performs floor division. It will return the integer part of the result on division.

>>> 7//2 

Normal division would return 3.5 here.

Similarly, ** performs exponentiation. a**b returns the value of a raised to the power b.

>>> 2**10 

Finally, % is for modulus. This gives us the value left after the highest achievable division.

>>> 13%7 

5. Explain identity operators in Python.

The operators ‘is’ and ‘is not’ tell us if two values have the same identity. 1.

>>> 10 is '10' 
 >>> True is not False 

6. What are numbers?

Python provides us with five kinds of data types:

Numbers – Numbers use to hold numerical values.

>>> a=7.0 

7. What are Strings?

A string is a sequence of characters. We declare it using single or double quotes.

>>> title="Ayushi's Book" 

8. What are Lists?

Lists – A list is an ordered collection of values, and we declare it using square brackets.

>>> colors=['red','green','blue'] 
>>> type(colors)

<class ‘list’>

9. What are Tuples?

Tuples – A tuple, like a list, is an ordered collection of values. The difference. However, is that a tuple is immutable. This means that we cannot change a value in it.

>>> name=(‘Ayushi’,’Sharma’) 

>>> name[0]=’Avery’ 

Traceback (most recent call last):

File “<pyshell#129>”, line 1, in <module>


TypeError: ‘tuple’ object does not support item assignment

10. What are Disctionary?

Dictionary – A dictionary is a data structure that holds key-value pairs. We declare it using curly braces.

>>> squares={1:1,2:4,3:9,4:16,5:25} 
>>> type(squares)

<class ‘dict’>
1. >>> type({})

<class ‘dict’>
We can also use a dictionary comprehension:

>>> squares={x:x**2 for x in range(1,6)} 
>>> squares {1: 1, 2: 4, 3: 9, 4: 16, 5: 25}

The Data Monk services

We are well known for our interview books and have 70+ e-book across Amazon and The Data Monk e-shop page . Following are best-seller combo packs and services that we are providing as of now

  1. YouTube channel covering all the interview-related important topics in SQL, Python, MS Excel, Machine Learning Algorithm, Statistics, and Direct Interview Questions
    Link – The Data Monk Youtube Channel
  2. Website – ~2000 completed solved Interview questions in SQL, Python, ML, and Case Study
    Link – The Data Monk website
  3. E-book shop – We have 70+ e-books available on our website and 3 bundles covering 2000+ solved interview questions. Do check it out
    Link – The Data E-shop Page
  4. Instagram Page – It covers only Most asked Questions and concepts (100+ posts). We have 100+ most asked interview topics explained in simple terms
    Link – The Data Monk Instagram page
  5. Mock Interviews/Career Guidance/Mentorship/Resume Making
    Book a slot on Top Mate

The Data Monk e-books

We know that each domain requires a different type of preparation, so we have divided our books in the same way:

1. 2200 Interview Questions to become Full Stack Analytics Professional – 2200 Most Asked Interview Questions
2.Data Scientist and Machine Learning Engineer -> 23 e-books covering all the ML Algorithms Interview Questions
3. 30 Days Analytics Course – Most Asked Interview Questions from 30 crucial topics

You can check out all the other e-books on our e-shop page – Do not miss it

For any information related to courses or e-books, please send an email to

About TheDataMonkGrand Master

I am the Co-Founder of The Data Monk. I have a total of 6+ years of analytics experience 3+ years at Mu Sigma 2 years at OYO 1 year and counting at The Data Monk I am an active trader and a logically sarcastic idiot :)

Follow Me