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 ?

Submitted by Ady TZIDON

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Solution: (Hide)

A= 5969
B= 3979
(Sum,Dif) = (9948, 1990)

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

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