Doubtnut said it has amassed over 13 million monthly active users across its website...

Doubtnut, a Gurgaon-based startup that operates an app to help students learn and master concepts from math and science using short videos, has raised $15 million in a new financing round as it looks to serve more people in small cities and towns of the country.
Doubtnut, part of Sequoia Capital India’s Surge accelerator, has raised $18.5 million to date, and its new financing round valued it at about $50 million, a person familiar with the matter said.

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