perplexus.info :: Numbers

Home > Numbers

Problems dealing with numbers, digits, and such other purely abstract rubbish.

Latest: Quick p&p problem

Using only p&p(no calculator), determine the value of:

9⁵+9⁴+9³+9²+9

Submitted on 2024-10-07 by K Sengupta

Page 1 of 165

next >>

Powers of 5 |
Posted on 2024-10-05 by K Sengupta (No Solution Yet, 3 Comments)

Factorial Square or Power? |
Posted on 2024-10-03 by K Sengupta (No Solution Yet, 2 Comments)

A tribute to a great man |
Posted on 2024-10-01 by Ady TZIDON (No Solution Yet, 4 Comments)

Greek Alphametic |
Posted on 2024-09-30 by K Sengupta (No Solution Yet, 0 Comments)

30 and 90 |
Posted on 2024-09-29 by K Sengupta (No Solution Yet, 1 Comments)

His Major Sight |
Posted on 2024-09-27 by K Sengupta (No Solution Yet, 1 Comments)

99 numbers in three lists |
Posted on 2024-09-27 by Jer (No Solution Yet, 3 Comments)

Some square roots sum square root of 1988 |
Posted on 2024-09-25 by K Sengupta (No Solution Yet, 5 Comments)

Predictive Powers |
Posted on 2024-09-24 by K Sengupta (No Solution Yet, 5 Comments)

West Side Story #2 |
Posted on 2024-09-23 by K Sengupta (No Solution Yet, 2 Comments)

lcm and gcd crossed square difference puzzle |
Posted on 2024-09-22 by K Sengupta (No Solution Yet, 4 Comments)

Twins Divide |
Posted on 2024-09-19 by K Sengupta (No Solution Yet, 3 Comments)

Prime centuries 2 |
Posted on 2024-09-19 by Math Man (No Solution Yet, 1 Comments)

Rex and Ralph: Prime Clues |
Posted on 2024-09-14 by K Sengupta (No Solution Yet, 1 Comments)

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info