All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers
Y ask about Y ? (Posted on 2017-04-04) Difficulty: 2 of 5
(i)Y is a positive integer.
(ii) Y-1 is divisible by 5;
(iii) Y is divisible by 2,3,4,6,7,8 and 9.

What is the smallest Y?.

See The Solution Submitted by Ady TZIDON    
Rating: 3.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): Another approach Comment 5 of 5 |
(In reply to re: Another approach by Ady TZIDON)

The product Y*(Y-1) has all the factors of Y and Y-1.  My indirect method looks for potential values which could be the product and solves a quadratic to check.  Therefore 5 is included.
  Posted by Brian Smith on 2017-04-13 09:22:02

Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
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:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information