Guesstimate Demonstration: How many UPI transactions happened in India in 2020?

A complete walkthrough of a guesstimate with a detailed look at the following: Clarifying questions Structuring Sanity checks Discussion of trends and the industry Analysis of best practices Do check out my initiative Cracking the Consulting Interview:   / crac.  . For weekly articles on business, finance and tech, check out my newsletter here: https://swethasrinivasan.substack.com/ Check out my article series on my experience with management consulting interviews along with my learnings here:   / swethasrinivasan25