Cool calculator trick - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Lounge For casual talk about things unrelated to General Motors. In other words, off-topic stuff. And anything else that does not fit Section Description.

Reply
 
 
 
Thread Tools Search this Thread
Old 10-10-2006, 02:13 PM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default Cool calculator trick

1. Grab a calculator. (you won't be able to do this one in your head)


although it'* easy to do it with pencil and paper.

2. Key in the first three digits of your phone number (NOT YOUR AREA
CODE)

3. Multiply by 80

4. Add 1

5. Multiply by 250

6. Add the last 4 digits of your phone number.

7. Add the last 4 digits of your phone number again.

8. Subtract 250

9. Divide number by 2.



Do you recognize the answer?
willwren is offline   Reply With Quote
Old 10-10-2006, 02:15 PM   #2
Senior Member
Certified Car Nut
 
Join Date: Jul 2003
Location: Robbinsdale, MN
Posts: 15,408
Thanks: 0
Thanked 0 Times in 0 Posts
MOS95B is on a distinguished road
Default

Neat! And not overly obvious why it works.
MOS95B is offline   Reply With Quote
Old 10-10-2006, 02:19 PM   #3
Junior Member
 
Join Date: Sep 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
jwakamud is on a distinguished road
Default

first three digits * 80 * 250 with an offset of 250. 80 * 250 = 20000

this means first three digits multiplied by 2 and scooted over four decimal places. plus 250. add your last four digits twice, so you end up with your phone number times two with an offset of 250, subtract 250 = your phone number times two.

divide by two.
jwakamud is offline   Reply With Quote
Old 10-10-2006, 02:22 PM   #4
Senior Member
True Car Nut
 
Join Date: Jul 2006
Location: Granville, Ohio ~NEBF '07 Survivor~
Posts: 5,001
Thanks: 0
Thanked 0 Times in 0 Posts
petraman is on a distinguished road
Default

Heh, that'* awesome! And the sad part is, I totally forgot the last 4 digits of my home phone number! I think I need to call my parents more often
petraman is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Hahh, COOL TRICK! wjcollier07 Lounge 8 06-15-2007 10:14 AM
Cool Math Trick MOS95B Lounge 5 01-30-2007 04:27 PM
Great and Easy to Use Tire Calculator Jim W General GM Chat 11 04-21-2004 11:57 PM
Tire size calculator JrFaust General GM Chat 2 09-12-2003 08:53 PM
Tire Size Calculator MOS95B General GM Chat 2 08-05-2003 02:11 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:57 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.