perplexus.info :: Just Math : Duplicate Digit Determination II

Duplicate Digit Determination II (Posted on 2010-11-19)

If the tetradecimal (base 14) representation of 2^P and 7^P start with the same (non-zero) digit for a positive integer P, what is that digit? Can you prove that it must be so?

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

Refer to:
The solution submitted by broll in this location.
The solution submitted by Jer in this location.

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

Subject	Author	Date
possible solution	broll	2010-11-20 11:21:37
re: An analogous case.	Ady TZIDON	2010-11-20 05:28:44
An analogous case.	Jer	2010-11-19 17:26:33

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