PigeonHole Principle (1 pattern) to solve 5 Quant Brain teasers (+1bonus Q)
Ever noticed how many quant brain teasers boil down to just one simple idea?
That idea is the Pigeonhole Principle — if you have more objects than boxes, at least one box must hold more than one. Simple, right? But it powers some of the most common interview puzzles.
Here, I walk through 5 green book problems(+1 bonus Q) following the same pattern:
• Matching Socks
• Handshakes at a Party
• Six People / Have We Met Before?
• Ants on a Square
• Counterfeit Coins
• Beetles on a Board
And I share a repeatable playbook:
Count → Prune → Spread → Ceiling → Conclude.
The beauty is that one framework solves them all.
Watch the video to see how these problems connect and how you can train yourself to spot the pattern instantly in interviews.
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