At first glance, it looks like a ridiculously easy question: How many holes are in a T-shirt? Most people immediately count the obvious openings and move on. But this deceptively simple puzzle has a twist that can make even confident puzzle-solvers stop and think twice.

Start with the four openings every ordinary T-shirt has: one for the neck, one at the bottom, and two for the arms. That brings the total to four. So far, nothing seems complicated—but the real challenge begins when you look more closely at the two visible tears.

Here’s where the trick comes in. The puzzle assumes that both rips pass all the way through the shirt, affecting both the front and the back. That means each tear creates two openings in the fabric, adding four more to the count. Add those to the original four, and the answer becomes eight holes.

But there’s a catch: the answer depends on how the tears are interpreted. If they affect only the front of the shirt, the total would be six instead. The difference comes down to whether you account for the fabric on both sides rather than counting only what you can see.

That’s what makes this little brain teaser so engaging. It doesn’t require advanced mathematics or special knowledge—just a willingness to question your first impression. Did you get eight on your first try, or did you miss the hidden detail?