perplexus.info :: Just Math : 2 ways to prove it

2 ways to prove it (Posted on 2017-10-31)

For every positive integer n: 10ⁿ+18*n-1 is divisible by 27.

The above statement can be proven by more than one way.

Find at least 2 distinct methods.

No Solution Yet Submitted by Ady TZIDON

Rating: 4.0000 (1 votes)

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

Subject	Author	Date
Puzzle Solution: Method 2	K Sengupta	2022-05-14 23:47:40
Puzzle Solution: Method 1	K Sengupta	2022-05-14 23:38:14
my offered proofs... are they really the same	Charlie	2017-10-31 13:58:26
Method 1	chun	2017-10-31 12:29:13

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (2)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info