6 Progressive Brain Teasers
Six medium-difficulty logic riddles that ramp up in challenge — quick, cinematic, and perfect for short videos.
Try this quiz
Play through the questions and see your score instantly
Ready to test your knowledge?
6 questions · Quick play · Instant results
Make your own quiz videos
Turn any topic into a polished video quiz — with AI-powered questions, voiceover, and animations. No video editing skills needed.
Unlimited quizzes, free to start
Create as many quizzes as you want. Describe your topic and AI builds the questions, answers, and explanations for you.
Customise everything
Pick from stunning templates, tweak colours and fonts, add your branding, and choose between vertical or landscape formats.
Export-ready videos
Download HD videos optimised for TikTok, YouTube Shorts, Instagram Reels, or full-length YouTube — one click, no editing.
No credit card required
Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: You see a clock showing 3:00. Without touching it, how can you make it show 9:00 using only a mirror?
Turn the mirror upside down to rotate the clock face to nine
Hold a mirror to the left of the clock so the reflected three looks like nine
Place a mirror opposite the clock so its reflection flips to nine
Question 2: Four identical weighing stones and a balance scale: one stone is slightly lighter. With two weighings, how do you find the light stone?
Weigh two vs two; if balanced, compare any two of the remaining stones
Weigh one vs one, then use the second weighing to compare the lighter side's stones
Weigh three vs one, then weigh two stones from the heavier side
Question 3: A room has three switches outside and three bulbs inside. You may enter the room once. How do you identify which switch controls each bulb?
Turn on switch A, then B; after a while turn B off and enter to check bulbs' heat and light
Label the switches randomly; memorize labels then enter to match by trial
Turn on each switch briefly in sequence and enter to see which bulbs flicker
Question 4: A prisoner must choose one of three doors: behind one is freedom, others lead back. He gets one yes/no question to a guard who may lie or tell truth. What question guarantees finding freedom?
Ask 'If I asked you whether door A leads to freedom, would you say yes?'; use the answer to eliminate one door
Ask the guard if door A leads to freedom and pick accordingly
Ask 'If I asked what door leads to freedom, which door would you indicate?' and treat his answer as the true door
Question 5: You have a 5-minute hourglass and a 7-minute hourglass. How do you time exactly 3 minutes?
Run the 7-minute twice and stop when the difference reaches three
Flip the 5-minute, then flip it again at one minute to isolate a three-minute span
Start both; when the 5-minute runs out, flip it; when the 7-minute runs out, three minutes have passed since the flip
Question 6: A sequence rule: 2, 3, 5, 9, 17, ? What’s next if each term tests pattern insight rather than arithmetic?
33
31
25