projectEUREKA - a collection of problems, puzzles and trivia

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Displaying problems 1 - 10 of 1129 in total

Problem 1138 - Coin Throwing - Solution Verified

You and your friend are walking down a hall. You notice that the floor is tiled with 3 inch by 3 inch square tiles. Your friend takes ...
Solve it!

3 correct answers, 6 tries, 1 commented solution , 3 solvers: (ilduderino) (guest) (mueschel) (Show all user statistics)

Submitted by (Amorydai) on August 22 2010 | Discuss

Category probability

Problem 1137 - Guess That Number - Solution Verified

"A" and "B" are playing a game, "A" chooses a non-negative integer less than 2ⁿ and tells "B" the number n. Then "B" gives k groups ...
Solve it!

5 correct answers, 8 tries, 1 commented solution , 5 solvers: (Amorydai) (ilduderino) (mueschel) (csilviu) Sepehr Mousavi (Sepehrmousavi) (Show all user statistics)

Submitted by (SABB) on August 22 2010 | Discuss

Category math

Problem 1136 - Bacteria - Solution Not Verified

You start out with one single bacterium. For this generation, and all thereafter, the probability that an individual bacterium will ...
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0 correct answers, 3 tries, 1 commented solution

Submitted by (Amorydai) on August 22 2010 | Discuss

Category probability

Problem 1135 - Solar system - Solution Verified

What is the largest planet in our solar system?
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9 correct answers, 10 tries, 0 commented solutions , 9 solvers: (bobbygriffin) (lucky99) Alex Velazquez (Alexmula) (mihainex) (SABB) (guest) (mueschel) (jnm2) (csilviu) (Show all user statistics)

Submitted by Joe (work) on August 18 2010 | Discuss

Category trivia

Problem 1134 - atoms - Solution Verified

What's the yearly percentage of atoms in your body replaced?
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19 correct answers, 29 tries, 0 commented solutions , 7 solvers: (guest) (lucky99) (mihainex) (Amorydai) TARIQ (tajer) (jnm2) (csilviu) (Show all user statistics)

Submitted by Joe (work) on August 18 2010 | Discuss

Category trivia

Problem 1133 - Longest river - Solution Verified

What's the name river of the longest river in the world?
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7 correct answers, 9 tries, 0 commented solutions , 7 solvers: Alex Velazquez (Alexmula) (SABB) (ilduderino) TARIQ (tajer) (guest) (csilviu) (mihainex) (Show all user statistics)

Submitted by Joe (work) on August 18 2010 | Discuss

Category trivia

Problem 1132 - largest island - Solution Verified

What is the largest island in the world?
Solve it!

5 correct answers, 10 tries, 0 commented solutions , 5 solvers: (lucky99) Alex Velazquez (Alexmula) (mihainex) TARIQ (tajer) (csilviu) (Show all user statistics)

Submitted by Joe (work) on August 18 2010 | Discuss

Category trivia

Problem 1131 - Country - Solution Verified

What is the country whose name begins with an "A", but doesn't end in an "A"
Solve it!

5 correct answers, 8 tries, 0 commented solutions , 5 solvers: (bobbygriffin) (lucky99) Alex Velazquez (Alexmula) (csilviu) (mihainex) (Show all user statistics)

Submitted by Joe (work) on August 18 2010 | Discuss

Category trivia

Problem 1130 - Gorilla - Solution Verified

How long do Gorillas sleep per day?
Solve it!

3 correct answers, 6 tries, 0 commented solutions , 3 solvers: (lucky99) (csilviu) (mihainex) (Show all user statistics)

Submitted by Joe (work) on August 18 2010 | Discuss

Category trivia

Problem 1129 - most intelligent animal - Solution Verified

what animal is second to man as the most intelligent animal on the planet?
Solve it!

5 correct answers, 11 tries, 0 commented solutions , 5 solvers: (lucky99) (mihainex) Alex Velazquez (Alexmula) TARIQ (tajer) (csilviu) (Show all user statistics)

Submitted by Joe (work) on August 18 2010 | Discuss

Category trivia

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Welcome to Project Eureka!

Project Eureka is a collaboratively edited site for problem solvers/creators - regardless of problem or field.

We are a bunch of math enthusiasts who decided to create a website for submitting and solving problems.
However, project Eureka is not limited to math problems; any problem, puzzle, or trivia question can be submitted to project Eureka. Similarly, for people who prepare for various tests, project Eureka offers the possibility of grouping multiple problems in a test and simulate a standardized test environment.

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