perplexus.info :: Numbers : Using its own digits

Using its own digits (Posted on 2018-05-31)

a.What two-digit number equals the product of units' digit by the factorial of tens' digit?
b. What if a non-decimal system (base below ten) were allowed?

Submitted by Ady TZIDON

No Rating

Solution: (Hide)

36 base 10
33 base 5

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

Subject	Author	Date
re: beyond base 10, analytical solution	Daniel	2018-06-01 11:35:36
re(5): beyond base 10, continued	Charlie	2018-06-01 10:48:21
re(4): beyond base 10, analytical solution....TBC	Charlie	2018-06-01 10:43:51
re(3): beyond base 10, analytical solution....TBC	Charlie	2018-06-01 10:12:25
re(2): beyond base 10, analytical solution....TBC	Charlie	2018-06-01 08:45:40
spoiler	xdog	2018-06-01 08:13:40
re: beyond base 10, analytical solution....TBC	Ady TZIDON	2018-06-01 04:14:13
beyond base 10, analytical solution	Daniel	2018-05-31 23:55:17
computer solution	Charlie	2018-05-31 14:31:30

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (1)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info