Go to navigation
It is currently Tue Dec 06, 2016 2:07 pm

All times are UTC




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Fri Sep 02, 2011 3:33 pm 
Offline

Joined: Thu Mar 10, 2011 4:00 pm
Posts: 80
Can anyone help with the following please? It's a question where we have to find the next in the series.

2 4 6 12 14 [ ]

The answer is 28.

I can see 2 doubled is 4, 6 doubled is 12, and 14 doubled is 28. That's as far as I seem to get. But if that's the rule, then where did the 6 and 14 come from?

Any help appreciated.


Top
 Profile  
 
PostPosted: Fri Sep 02, 2011 4:16 pm 
Offline

Joined: Mon Mar 12, 2007 11:49 am
Posts: 450
2 4 6 12 14 [ ]

It's x2, +2, x2, +2, x2

I usually write these out with the 'alternative' methods of getting to the next number written above and below.

So, to get from 2 to 4 you either +2, or x2. Write +2 above, x2 below.

To get from 4 to 6, you can only +2. Write it above.

To get from 6 to 12, you +6 (write it above with the adds), or x2 (write it below with the other times), etc.

I'd show it, but I can't do tables.


Top
 Profile  
 
PostPosted: Fri Sep 02, 2011 4:59 pm 
Offline

Joined: Thu Mar 10, 2011 4:00 pm
Posts: 80
That's great - thanks for your help.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
CALL 020 8204 5060
   
Privacy Policy | Refund Policy | Disclaimer | Copyright © 2004 – 2016