Top 5 Questions From Y Combinator Interview

In this video, host Arjent Mahadeavan conducts a mock Y Combinator interview, posing the five biggest questions founders face and offering concise advice for each. He stresses answering “What are you working on?” with literal, jargon-free specifics, leading progress updates with your strongest metric like revenue, and proving founder-market fit through a non-obvious “We’ve discovered that…” insight. For user acquisition, he demands a concrete, repeatable process rather than vague strategies, and he outlines a three-part formula for handling competition: name top rivals, state your differentiator, and give your right to win. The video also includes key interview tips—know your first answer, prepare three points you want to share, and stay concise—plus a bonus free list of over 50 YC interview questions in a linked Google Doc. Ultimately, the message is to practice actively and answer out loud, since the 10-minute interview rewards precision, preparation, and clear communication.

• ▶ 0:03 The host will ask the five biggest questions a YC partner is likely to ask over 10 minutes; viewers should pause, answer out loud, then resume for advice.
• ▶ 0:19 Host Arjent Mahadeavan introduces himself as founder/CEO of doula.com, a YC-backed NYC startup that has raised over $13 million, and notes he's been in the "hot seat" before.
• ▶ 0:32 The intro wraps up with a transition into the mock interview: "Without further ado, let's start the clock and jump in."

• ▶ 0:41 Answer "What are you working on?" as literally as possible: pick one founder, avoid jargon/buzzwords, and state exactly what you do with a concrete example like "We get you an LLC in all 50 states and an EIN..."

• ▶ 1:34 For "What's your progress so far?", lead with your most impressive metric—ideally revenue—then follow with other numbers in bullet-point style, e.g., "$1M ARR, growing 10% week-over-week with 1,000 paying customers."

• ▶ 2:16 Don't waste time on origin stories or vague vision; be precise and brief, because the interview is only 10 minutes. If you lack revenue, fall back on product usage or how quickly you've been building.

• ▶ 2:38 Unique insight question is really "Why you?" – prove founder-market fit by stating a non-obvious discovery using "We've discovered that..." rather than generic market descriptions.
• ▶ 3:18 Example: Doula's insight was that international founders' buyer journey is backwards – they care about taxes first, not formation – so Doula led with tax questions, flipping the script competitors used.
• ▶ 4:29 User acquisition answer must be a concrete, repeatable process for first 1,000 customers; avoid vagueness – specify exact channels, keywords, and partnerships, as in Adoula's three thirds of paid search, channel partnerships, and word of mouth.
• ▶ 5:39 Never say you have no competitors—in any viable market, competition always exists; the question is a test of market understanding.
• ▶ 5:47 Answer with a concise three-part formula: name your top 1–2 competitors, state your key differentiator in one sentence, and give your “right to win.”
• ▶ 6:28 Don’t fear competition—it’s a positive signal of opportunity; if you want no competition, don’t start a startup at all.
• ▶ 6:38 Pause the video and actively practice the questions rather than just watching—you can restart and try again since practice makes perfect.
• ▶ 6:47 The three biggest YC interview tips: know your answer to the first question, know the three things you want to share no matter what, and be concise by avoiding jargon.
• ▶ 7:23 Support the channel by liking, subscribing, and turning on notifications; founders can also schedule a demo, and Doula handles the back office so you can focus on core work.
• ▶ 7:45 The presenter introduces a bonus resource: a free, downloadable list of 50+ Y Combinator (YC) interview questions.
• ▶ 7:52 The list is provided in a Google Doc, linked below the video for easy access.
• ▶ 7:56 The doc offers more extensive practice beyond the five key questions covered in the video, and the video ends with a sign-off to check the link.

• ▶ 0:00 Introduction and Instructions (0:00 - 0:35) - - Opens the Y Combinator mock interview and explains the next 10 minutes.
• ▶ 0:35 First Two Questions: Concept and Progress (0:35 - 2:40) - - Covers "What are you working on?" and "What's your progress so far?" to prove you're a doer.
• ▶ 2:40 Unique Insight and User Acquisition (2:40 - 5:28) - - Explores the non-consensus insight and getting users, including Question 4.
• ▶ 5:28 Competitors and Differentiation (5:28 - 6:38) - - Tests market knowledge with "Who are your main competitors and why are you different?"
• ▶ 6:38 Summary and Closing (6:38 - 7:47) - - Wraps up the practice questions, offers further help, and thanks viewers.
• ▶ 7:47 Bonus: 50+ YC Questions Guide (7:47 - 8:09) - - Points to a downloadable list of 50+ YC questions as an extra resource.