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When you apply a VLOOKUP function, what does the “column_index_num” argument represent? A) The number of rows to lookup B) The number of columns in the table C) The column number from which the result will be returned. #excel #data #dataanalyst #d

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Array.reduce() is Goated the Swiss army knife Summing Numbers: Using reduce() to calculate the sum of numbers in an array. Flattening Arrays: Flattening a nested array into a single array. Grouping Objects: Grouping objects based on a speci

If you still use VLOOKUP... you're suffering for no reason Had this classic moment: "Why did my lookup change after I inserted a column?" 😭 That's why I stopped using VLOOKUP for most things. ✅ XLOOKUP doesn't care if columns shift ✅ It can retu

I'm just thinking out loud here—if we're talking about agent-to-agent (A2A) interactions, especially in decentralized environments, shouldn't there ideally be some kind of agent registry or search engine? Like, how does one agent even discover anothe

🚀 How to Save 90% on Your AI Costs Here’s exactly how we cut AI costs from $500/month to $5/month: 1. Avoid LLMs When Possible Use rules, regex, or database lookups for simple tasks (60–80% of workflows). Example: A lead qualification bot using rege

7 database types used in modern AI systems. I’ve explained each one in simple steps. 1. 𝗩𝗲𝗰𝘁𝗼𝗿 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 • 𝗠𝗮𝗶𝗻 𝗣𝘂𝗿𝗽𝗼𝘀𝗲: Store embeddings so AI can search by meaning. • 𝗛𝗼𝘄 𝗶𝘁 𝘄𝗼𝗿𝗸𝘀: Text/images → vectors → neare