Discover more from My PM Interview - Product Manager Interview Question Answers
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.
Preferred Payment Methods:
Google Pay / PhonePe at UPI Id - mypminterview@oksbi
Paypal at email@example.com
Once done, email us the payment receipt at firstname.lastname@example.org
Business Case Studies [FREE]