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IQ test challenge: Only a sharp logical thinker can solve this confusing brain teaser

An AI-generated brain teaser challenged readers’ logic as they struggled to figure out the correct relationship hidden in the short riddle.

Published on: Oct 20, 2025 11:30 PM IST
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Who doesn’t love a good brain teaser? These puzzles give your mind a workout while offering a few minutes of fun. If you enjoy testing your logic and reasoning, here’s something new for you to try. This latest brain teaser, created using Google Gemini AI, is the perfect mix of simple and confusing — it looks easy at first but can leave you second-guessing yourself.

An AI-generated brain teaser puzzled readers with its tricky family ties and simple wording that turned out to be surprisingly hard to solve. (Gemini AI generated)
An AI-generated brain teaser puzzled readers with its tricky family ties and simple wording that turned out to be surprisingly hard to solve. (Gemini AI generated)

(Also read: Brain teaser: Can you crack this simple yet mind twisting puzzle?)

The puzzle you need to solve

Take a look at this one:

"S is the sister of T, T is the mother of U, U is the daughter of V, so how is S related to V?"

Sounds simple, right? But once you start connecting the dots, it gets tricky. You might even find yourself sketching a quick family tree just to figure it out.

Why people love brain teasers

Brain teasers like this one are popular because they make us stop for a moment and think differently. They challenge how we approach problems and give that satisfying “aha!” moment when we finally solve them. It’s not just about getting the right answer, it’s about enjoying the process of thinking through it.

(Also read: Brain teaser: Only 1 in 10 people can solve this mind bending riddle)

The answer

Here’s how it goes: S is the sister of T, and T is the mother of U. U, in turn, is the daughter of V. That means T is married to V, making S the sister-in-law of V.

 
ABOUT THE AUTHOR
Mahipal Singh Chouhan

Mahipal Singh Chouhan is a Senior Content Producer at Hindustan Times Digital, with nearly five years of experience in digital journalism and content production. His work primarily focuses on offbeat and trending stories that reflect everyday experiences and evolving conversations on the internet. He has consistently worked on transforming viral content and human interest stories into structured news pieces that engage readers while maintaining editorial clarity. At Hindustan Times, Mahipal contributes to identifying and developing stories emerging from social media trends, online communities, and real-world incidents that capture public attention. His approach involves adding context and journalistic perspective to fast-moving digital narratives, helping present viral moments in a clear and reader-friendly format suited for digital audiences. Before joining Hindustan Times Digital, he was associated with DNA India, where he gained experience in newsroom workflows and digital storytelling practices. Mahipal holds a degree in Journalism and Mass Communication from the Vivekananda Institute of Professional Studies, Delhi. He is particularly interested in tracking emerging trends and understanding how online conversations evolve into broader public discussions. His work reflects a focus on accuracy, readability, and relevance in the rapidly changing digital news environment. Outside of his professional responsibilities, Mahipal takes an interest in history and sports and regularly works on improving his general knowledge, which complements his curiosity as a media professional.

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