# 100 EXA RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

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## Solving 100 Exa Riddles

Here we've provide a compiled a list of the best 100 exa puzzles and riddles to solve we could find.

Our team works hard to help you piece fun ideas together to develop riddles based on different topics. Whether it's a class activity for school, event, scavenger hunt, puzzle assignment, your personal project or just fun in general our database serve as a tool to help you get started.

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## 100 Lawyers Riddle

Hint:
A whine cellar.
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Solved: 12%

## The 100 Pound Watermelon

Hint:
50 pounds.

In the beginning it is 99 pounds water and 1 pound other stuff. At the end the 1 pound other stuff is 2 percent so the total weight is 50 pounds. 50 pounds - 1 pound other stuff = 49 pounds water. So 99 pounds - 49 pounds = 50 pounds water lost.
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Solved: 40%

## A 100 Year Old Ant

Hint:
An antique!
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Solved: 52%

## The Exam Cheater Riddle

Hint:
The cheetah!
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## Halfway To 100

Hint:
50
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## I Am Close To 100

Hint:
98.
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Solved: 77%

## The 100 Seat Airplane

Hint: You don't need to use complex math to solve this riddle. Consider these two questions: What happens if somebody sits in your seat? What happens if somebody sits in Steve's assigned seat?

The chase that the first person in line takes your seat is equal to the chance that he takes his own seat. If he takes his own seat initially then you have a 100% chance of sitting in your seat, if he takes your seat you have a 0 percent chance. Now after the first person has picked a seat, the second person will enter the plan and, if the first person has sat in his seat, he will pick randomly, and again, the chance that he picks your seat is equal to the chance he picks someone your seat. The motion will continue until someone sits in the first persons seat, at this point the remaining people standing in line which each be able to sit in their own seats. Well how does that probability look in equation form? (2/100) * 50% + (98/100) * ( (2/98) * 50% + (96/98) * ( (2/96) * (50%) +... (2/2) * (50%) ) ) This expansion reduces to 1/2.
An easy way to see this is trying the problem with a 3 or 4 person scenario (pretend its a car). Both scenarios have probabilities of 1/2.
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## Add Up To 100 Riddle

Hint:
1+2+3+4+5+6+7+(8x9)=100
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## After The Day Riddle

Hint:
Tomorrow.

The day before yesterday is two days ago.

The day after the day before yesterday (2 days ago) is yesterday.

And two days after yesterday is tomorrow.
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Solved: 61%

## Lasting Memories Riddle

Hint:
Sleep. Its the time your mind organizes memories and knowledge. Sleep deprivation is miserable (as you well know if youve experienced it). If you miss a few nights of sleep, you can sleep more to catch up with no problems. And some believe that segmented sleep, where you sleep, wake for an hour, then go back to sleep, was the dominant form of sleep before the Industrial Revolution.
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Solved: 46%

## The Bio Exam Riddle

Hint:
An itsy bitsy book.
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Solved: 13%

## Hydrophobic Chem Exam Riddle

Hint:
Fear of utility bills.
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## 100 Widgets Riddle

Hint:
It would take 5 minutes. Each machine takes 5 minutes to make its widget. Therefore, each of the 100 machines would have finished making its widget in 5 minutes.
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Solved: 63%

## 100 Meter Sprint Riddle

Hint:
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Solved: 0%

## Less Than 100 Riddle

Hint:
45 (1/5 of 45 = 9, 9 + 45 = 54)
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Solved: 48%