## Welcome to BrainDen.com - Brain Teasers Forum

 Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account. As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends. Of course, you can also enjoy our collection of amazing optical illusions and cool math games. If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top. If you have a website, we would appreciate a little link to BrainDen. Thanks and enjoy the Den :-)
Guest Message by DevFuse

4 replies to this topic

### #1 yellowneck

yellowneck

Newbie

• Members
• 1 posts

Posted 05 May 2010 - 08:28 AM

An arbitrary number could be expressed as

A1A2 A3 ....An-1An

Each digit in the number is unknown and the number is also unknown.
Applying a right shift to the number, the new number becomes

An A1 A2 A3 .... An-1

(a) It was found that the new number is 1.5 times larger than the original number.
What will be the original number?

(b) If the original number is 1.5 times larger than the new number.
What will be the original number?
• 0

### #2 Tuckleton

Tuckleton

• Members
• 201 posts

Posted 05 May 2010 - 10:54 AM

Spoiler for

• 0

### #3 DeeGee

DeeGee

• Members
• 358 posts

Posted 05 May 2010 - 03:49 PM

Spoiler for

Spoiler for More solutions

• 0

### #4 JTZero

JTZero

Junior Member

• Members
• 73 posts

Posted 07 May 2010 - 02:38 AM

I thought I knew math fairly well but WOW. Seriously, how do you guys figure that stuff out?
• 0

### #5 Tuckleton

Tuckleton

• Members
• 201 posts

Posted 07 May 2010 - 01:02 PM

I thought I knew math fairly well but WOW. Seriously, how do you guys figure that stuff out?

Spoiler for

• 0

#### 0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users