Robots vacuum our floors, build our cars and drive around on Mars, and they all run on the same simple ideas: sensors to notice the world, motors to move, and code to decide what to do next. These 30 robot riddles cover the machines, the parts inside them and the coding basics that make them think.
The easy riddles suit younger kids who love gadgets. The medium ones sneak in a little computer science, and the tricky ones are logic and math puzzles that would make any robotβs circuits hum. Each riddle has a hint, for humans who need a small power-up.
Easy Robot Riddles for Kids
I roll around your floor all by myself, bump gently into chairs, gobble up crumbs and dust, and drive back to my dock when Iβm tired. What am I?
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A robot stays perfectly still until you put me inside. When I run out, you have to charge me or swap me. What am I?
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Iβm a robotβs eyes, ears and fingertips. I tell it how far away the wall is, how bright the room is, or whether it just bumped into something. What am I?
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Press my buttons from across the room and the toy car zooms forward, turns and stops. What am I?
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In a factory, I build cars all day long. I bend at my shoulder, elbow and wrist, but I have no body, no legs and no head. What am I?
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I drive across Mars on six wheels, take photos and study rocks, and nobody is sitting inside me. What am I?
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I spin when electricity flows through me, and my spinning turns a robotβs wheels. What am I?
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Iβm a robotβs hand, but I often have only two or three fingers. I open, close and pinch to pick things up. What am I?
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Why did the robot go on vacation?
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Whatβs a robotβs favorite snack?
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Medium Robot Riddles
Iβm a mistake hiding in a computer program. Iβm named after a creepy-crawly, and in 1947 engineers really did find a moth stuck inside one of their computers. What am I?
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I tell a robot to do the same thing again and again, until something tells it to stop. What am I?
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Iβm a list of clear steps, in the right order, for solving a problem. A recipe for pancakes is one of me. What am I?
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Iβm a way of counting with only two digits, 0 and 1. Every photo, song and game on a computer is stored using me. What am I?
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Iβm a fork in the road for computer code. If something is true, the program goes one way. Otherwise, it goes the other way. What am I?
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I let a robot eat sunshine. Some Mars rovers used me to charge their batteries every day. What am I?
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I can steer, brake and park with nobodyβs hands on the wheel. I use cameras, radar and sensors to watch the road. What am I?
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Iβm a flying robot, usually with four spinning propellers, and I can take pictures from high in the sky. What am I?
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Iβm a robot built in the shape of a person, with a head, two arms and two legs. What kind of robot am I?
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Iβm a robot without a body. I answer questions in a little text box on websites, and I never get tired of typing. What am I?
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Tricky Robot Riddles for Grown-Ups
A robot is facing east. It turns left, then turns all the way around, then turns left again. Which way is it facing now?
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In binary, what number is written as 101?
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- One 4, no 2s and one 1.
If 5 robots build 5 toy cars in 5 minutes, how long do 100 robots take to build 100 toy cars?
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A robot counts from 1 to 100. For every number divisible by 3 it says βFizz,β for every number divisible by 5 it says βBuzz,β and for numbers divisible by both it says βFizzBuzz.β How many times does it say βFizzBuzzβ?
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- A number divisible by both 3 and 5 is divisible by 15: 15, 30, 45, 60, 75 and 90. (Programmers use this exact puzzle as a coding test.)
Where was the very first βrobotβ born: in a science lab, in a factory, or in a theater?
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Iβm a test named after a codebreaking mathematician. A computer passes me if, chatting only by text, it can convince a person that itβs human. What am I?
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A science-fiction writer named Isaac Asimov invented three laws for robots. What does the first one say?
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A robot in a square room follows one rule forever: βDrive forward until you hit a wall, then turn left.β After its first trip to a wall, what path does it trace?
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Iβm a little test on websites that asks you to click on every square with a traffic light in it, just to prove youβre not a robot. What am I?
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Two robots start at opposite ends of a 100-meter hallway and roll straight toward each other. One rolls 3 meters per second and the other 2 meters per second. How many seconds until they meet?
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Make It a Game
- Robot voice round: whoever reads the riddle has to use their best robot voice. Whoever answers has to reply in one too.
- Program the teacher: after the coding riddles, let students give a classmate step-by-step instructions to walk across the room. It shows quickly why algorithms need to be exact.
- Bug hunt: read one riddle with a deliberately wrong answer each round. The first player to spot the βbugβ wins a point.
Want more tech puzzles? Try our computer science riddles, our tech riddles or our science riddles.