Estimation - Number of WhatsApp Chats occurring in India
Product Management Interview: Guess estimate the total number of WhatsApp messages sent in India.
Interview Tip: Ask Clarifying Questions to understand the scope of the problem.
Q) What is the Time Frame we should consider?
A) Let’s consider, on a Per Day basis.
Q) Does it include both personal and group chats?
A) Yes, it includes both.
Number of WhatsApp users in India -
= Total Populations of India * Internet Penetration * % of Smartphone users * % of users using WhataApp
= 1.3 billion * 0.5 * 0.6 * 0.8
= 312 million
= 300 million (approx)
The approximate number of WhatsApp users in India = 300 million
Now, let’s divide the number of WhatsApp users into the following age groups -
10 - 24 years old
25 - 35 years old
36 - 50 years old
52 - 65 years old
Also, these age groups can be further divided based on usage,
Now, let’s calculate the number of WhatsApp messages sent per day -
WhatsApp messages sent by age groups,
10 - 24 yrs old = 70 x (150 M x 0.7) + 40 x (150 M x 0.2) + 20 x (150 M x 0.1) = 8850M
25 - 35 yrs old = 50 x (75 M x 0.5) + 20 x (75 M x 0.3) + 10 x (75 M x 0.2) = 2475 M
36 - 50 yrs old = 30 x (45 M x 0.3) + 10 x (45 M x 0.5) + 5 x (45 M x 0.2) = 675 M
51 - 65 yrs old = 10 x (30 M x 0.1) + 5 x (30 M x 0.3) + 2 x (30 M x 0.6) = 111 M
Total number of WhatsApp messages sent per day,
= (8850 + 2475 + 675 + 111) million
= 12,111 million or 12.11 billion.
To help you with your Product Manager interview preparations, we have compiled a complete list of the most asked Product Management Interview Questions and Answers at companies like Facebook, Google, Amazon, Microsoft, Netflix, etc. answered by PMs at FAANG.
Now get, Full Access to All PM Interview Questions and Detailed Answers by FAANG PMs for a Year! Get the Yearly Subscription now! 👇
Preferred Payment Methods:
Google Pay / PhonePe at UPI Id - mypminterview@oksbi
Paypal at firstname.lastname@example.org
Once done, email us the payment receipt at email@example.com
Product Improvement Questions: 6 Things to Remember while Answering [FREE]
How would you go about designing a new location-sharing app for Google?
Design an app for the California’s Department of Motor Vehicles
Common Mistakes in Answering Product Design Questions [~FREE]
How to Answer Behavioral Interview Screening Questions? [FREE]
Describe your day-to-day activities as a Product Manager [FREE]
Behavioral Interview Questions - Storytelling Framework [FREE]
What's the one thing that excites you the most about Product Management?
How do you take product decisions involving multiple stakeholders with consent?
How do you use research & data to guide your day-to-day decisions?
What tools do you use in your day-to-day activities as a Product Manager?
How would you keep developers in your team motivated to turn out quality work?
Tell me about a time you had to make a decision to make short-term sacrifices for long-term gains.
How will you manage a team where team members are more experienced than you?
Which apps do you use on your cellphone on a daily basis and why? [FREE]
How much storage space do you need to store all the information from Google maps?
Estimate the Number of WhatsApp Chats occurring in India [FREE]
Estimate the Number of Hours spent on Smart Phones by all Indians
Estimate the Number of Golf balls that can fit in a School Bus
Estimate the Number of Tennis balls you can fit in an Aircraft
Estimate the Number of Refrigerators sold in India every year
Estimate the storage space is required to host all the images of Google Street View
Estimate the Number of Queries Answered by Google per Second
Common Mistakes to avoid while Answering Estimation Questions
How would you evaluate the success of Reactions on Facebook?
How would you evaluate the success of Instagram Stories? [FREE]
Common Mistakes to avoid while Answering Product Metrics Questions
Junglee Games - Product Manager Interview Experience. [FREE]
Product Execution: Uber Product Manager Interview - Increase in Cancel Rates
What would you do if there is a High Acquisition but Low Retention?
Common Mistakes to avoid while Answering Product Manager Problem-Solving Questions
Which channels would you use to increase top-of-the-funnel activities for Duolingo?
What are some alternative uses for chopsticks besides eating?
Common Mistakes to avoid while Answering Product Strategy Questions
Business Case Studies [FREE]