All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Algorithms
Five Multiplication Foray (Posted on 2022-09-26) Difficulty: 2 of 5
(I) Consider two 2-digit base ten positive integers, distinct or otherwise, each having the last digit as 5.
Devise an algorithm for mentally multiplying the two numbers.

(II) Derive the 2-digit duodecimal analogue to (I) that utilizes a very very similar algorithm.

Extra Challenge: Generalize (I) and (II) to all positive integer bases less than 37.

Clarification: It may NOT be very facile to effect the mental multiplication in part (II), but with the algorithm, it would be fairly easy to derive the product very quickly by way of p&p.

No Solution Yet Submitted by K Sengupta    
Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionSolution for (I) and (II)Jer2022-09-26 15:48:00
SolutionSolution for (I) and (II)Jer2022-09-26 15:48:00
SolutionSolution for (I) and (II)Jer2022-09-26 13:13:44
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (9)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2023 by Animus Pactum Consulting. All rights reserved. Privacy Information