perplexus.info :: Just Math : one 3 or one 7 puzzle

one 3 or one 7 puzzle (Posted on 2015-08-06)

N is a 5-digit positive integer, such that:

(i) N contains at least one 3 or at least one 7, and:
(ii) N is divisible by 37.

Determine the total number of values of N satisfying the given conditions.

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

The required total number of N is 1710.
For an explanation, refer to the computer program assisted solution submitted by Charlie in this location.

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

Subject	Author	Date
re: computer solution vs approximation	Ady TZIDON	2015-08-06 14:32:01
computer solution	Charlie	2015-08-06 13:30:07
My approximation not a spoiler	Ady TZIDON	2015-08-06 13:18:46

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