Answer to Riddle 3 should be FOOTPRINTS rather than FINGERPRINTS.
20 Riddles That Will Challenge Your Brainpower

Solving riddles can force you to think in creative or unusual ways that will make your brain cells work overtime. This can stop the brain from shrinking with age, boost memory skills, and improve brain-cell connections.
We at Bright Side want you to have fun while exercising your brain and that’s why we prepared a compilation of entertaining, mind-boggling riddles.
1.


2.


3.


4.


5.


6.


7.


8.


9.


10.


11.


12.


13.


14.


15.


16.


17.


18.


19.


20.


Which one was the hardest for you to guess? Share these riddles with your friends to help them keep their minds sharp.
Comments
The last one is not correct. If the 7-8 pages are on one paper than the 100-101 and 222-223 can't be so the answer is 5. If the 7-8 pages are on two different papers than the 100-101 and 222-223 are on one paper so the answer is 4.
Riddle #19 (How many attempts) - Can be done with only 3 attempts. Two attempts for the first door (the third would obviously be the correct one), one attempt for the second.
Related Reads
20 People Shared Their Best and Hilarious Pregnancy Moments

10 Family Moments That Prove Quiet Kindness Still Breaks the Chains We’ve Carried for Years

8 Deep-Cleaning Habits That Secretly Damage New Renovations

10 Travel Moments That Show the Best Journeys Are Shaped by Kindness and Compassion

10 Rescue Pets Who Got the Home They Deserved, From a Terrier Returned 3 Times to a Dog Tied to a Speed Limit Sign

14 Times Quick Thinking Became the Smartest Move in the Room

10 Stories That Prove Empathy Opens Doors That Words Never Could

12 Animal Shelter Moments That Teach Us Kindness Still Brings Happiness to Heavy Hearts

15 Listings That Turned Into Marketplace Sagas Nobody Could Script

10 Moments That Prove Kindness Still Gives Lonely Hearts Enough Emotional Support to Face the World Again

12 Real Animal Shelter Moments Where Cats and Dogs Teach People to Still Choose Compassion and Kindness

10 US Gardening Moments Where Kindness Warmed People’s Hearts Like a Comfort Food After a Bad Day
