All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info
Home
Welcome to perplexus.info, flooble's perplexing puzzle portal. Here, we collect all sorts of puzzles, from simple logic questions and word tricks to in-depth math problems like probability and geometry. Click around and see if your brain is up to the task! If you're new here, make sure you sign up so that you can leave comments and submit your own problems!
> Logic> Probability> Shapes> General (1)
> Numbers (3)> Games> Paradoxes> Riddles
> Just Math> Science (1)> Algorithms
Difficulty: 2 of 5 Latest: Unlikely event (in Numbers)
Once I read a magazine article about probability where the author stated there was an unlikely event. The probability was given as

(1 - 10-21)1025

This probability is pretty small but hard to get a handle on. It is, however, quite close to 10-n, where n is an integer.

Find this integer.
(No Solution Yet, 0 Comments) Submitted on 2019-02-21 by Danish Ahmed Khan   
Difficulty: 3 of 5 Bonus: It ain't Fibonacci (in Sequences) Rating: 4.00
Find the pattern and state the next few numbers.

0 0 1 3 2 6 5 13 12 14 11 27 24 ...

Does this sequence ever revert back to a single digit number? If so, when?

(Solution Posted, 10 Comments) Submitted on 2005-02-22 by Erik O.   
Difficulty: 1 of 5Teapot effect (in Science)
Posted on 2019-02-20 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 2 of 5Twin and reversible (in Numbers)
Posted on 2019-02-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Limited reflections (in General)
Posted on 2019-02-19 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Difficulty: 2 of 5Bifonacci (in Numbers)
Posted on 2019-02-19 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Chacun à son goût ! (in Just Math)
Posted on 2019-02-18 by Ady TZIDON (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Trees, Teas, and Peas (in Word Problems)
Posted on 2019-02-18 by Charlie (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Outcoming (in Geometry)
Posted on 2019-02-17 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Algebra? (in Just Math)
Posted on 2019-02-16 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5I squeeze, squeeze, and squeeze (in Geometry)
Posted on 2019-02-15 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 55 given, 3 to find (in Sequences)
Posted on 2019-02-15 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Davay! (in Sequences)
Posted on 2019-02-14 by Ady TZIDON (Solution Posted, 7 Comments)
Difficulty: 1 of 5Quick Divisiblity Proof (in Numbers)
Posted on 2019-02-14 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Recovering the number (in Numbers)
Posted on 2019-02-13 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 5The Cut Cube (in Shapes)
Posted on 2019-02-13 by Danish Ahmed Khan (No Solution Yet, 5 Comments)

Recently Posted Solutions:
Difficulty: 3 of 5Davay! (in Sequences)
Submitted By Ady TZIDON. Solution posted on 2019-02-17 07:24:01
Difficulty: 3 of 5She missed an operator (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2019-02-11 04:23:50
Difficulty: 4 of 5Get a stonefish! (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2019-02-11 04:08:08
Difficulty: 2 of 5Oscar Wilde Said (in Word Problems)
Submitted By Charlie. Solution posted on 2019-02-10 22:43:19
Difficulty: 3 of 5Can you C it? (in Word Problems)
Submitted By Kenny M. Solution posted on 2019-02-10 08:53:31
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (4)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2019 by Animus Pactum Consulting. All rights reserved. Privacy Information