perplexus.info :: Just Math : 8 eights, 8 ones

8 eights, 8 ones (Posted on 2019-10-01)

The unordered set S=(1818, 8811, 1881, 1818) represents 4 distinct decimal numbers: A, B, A+B, A-B.
All "8"s denote the same digit while each "1" stands for a different digit, distinct from all the others .

What digit is not used in S ?

See The Solution Submitted by Ady TZIDON

No Rating

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Puzzle Answer	K Sengupta	2022-05-31 04:03:11
Responsive web design company in India	sarika verma	2020-01-02 23:53:53
re solution .... partial spoiler !	Ady TZIDON	2019-10-18 09:28:51
computer solution	Charlie	2019-10-01 15:44:37

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 (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info