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
15 Stories From People That Can’t Get Over the Rudeness They Witnessed

14 People Talk About Strange Things That Happened to Them That Can’t Be Logically Explained

18 People Share Stories About Kids Who Are Best at Checking Their Parents’ Patience

14 Coincidences That Seem to Be Predetermined by Fate Itself

What 20 Things Look Like in Real Life, That We Only Know From Action Movies

25+ People Whose Day Started Not With a Cup of Coffee but With a Small Wonder

15 People Shared the Moment They Realized Their Partner Was “The One,” and Their Stories Are Soul-Stirring

12 Moments That Prove Best Friends Are the Family Who Keep the Light Shining

10 Stories That Show What Happens When You Stop Being the Family ATM

My Boyfriend’s Mom Kept Mocking My Career—My Response Silenced the Whole Table

I Refuse to Babysit My Stepson Just Because I Work From Home

10 Stepchildren Who Opened Their Hearts to Love Again
