perplexus.info :: Just Math : A four number puzzle

A four number puzzle (Posted on 2019-06-15)

A, B, C, and D are four positive integers whose sum is 2019. What are the largest and smallest values that A*B+B*C+C*D can be?

See The Solution Submitted by Brian Smith

No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)

re(3): proposed solution -- higher value

| Comment 4 of 5 |

Using an approximation to 2x+2sqrt(x) = 2019

31*978+978*979+31*978 = 1018098

Posted by broll on 2019-06-16 22:41:56

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (16)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info