C2 GP

Maths exam discussion - share revision tips in preparation for GCSE, A Level and other maths exams and discuss how they went afterwards.

Announcements Posted on
IMPORTANT: You must wait until midnight (morning exams)/4.30AM (afternoon exams) to discuss Edexcel exams and until 1pm/6pm the following day for STEP and IB exams. Please read before posting, including for rules for practical and oral exams. 28-04-2013
Search Thread
Advanced Search
Sign in to Reply
  1. Ganhad's Avatar
    1 10-05-2012  00:58
    • Exalted Member
    • Posts: 346
    C2 GP
    Find the number of terms in each of these geometric progressions

    3,6,12,...,768 well i just want to know how to do this then ill know all of em
  2. Kiss's Avatar
    2 10-05-2012  01:09
    • Vengeful, Imperial Overlord of The Student Room
    • Location: Edinburgh!
    • Posts: 4,835
    Re: C2 GP
    ...................what?
  3. Ganhad's Avatar
    3 10-05-2012  01:12
    • Exalted Member
    • Posts: 346
    Re: C2 GP
    My english is rubbish what i wanted to say was i would appreciate some assistance on how to find the number of terms in the sequence. WOOPS WRONG FORUM
    Last edited by Ganhad; 10-05-2012 at 01:28.
  4. grazie's Avatar
    4 10-05-2012  01:33
    • Exalted Member
    • Posts: 307
    Re: C2 GP
    (Original post by Ganhad)
    Find the number of terms in each of these geometric progressions

    3,6,12,...,768 well i just want to know how to do this then ill know all of em
    u_n = ar^{n-1}

    You've been given u_n and a. You can work out r which leaves you to plug the numbers to find n.
  5. amime's Avatar
    5 10-05-2012  03:13
    • Peer Of The TSR Realm
    • Location: West Midlands
    Re: C2 GP
    I have no idea what you have just said but I'm gonna go with 9?
Sign in to Reply
Search Thread
Advanced Search
Share this discussion:  
Useful resources

Articles:

Study Help rules and posting guidelinesStudy Help Member of the Month nominations

Quick Link:

Unanswered Maths Exams Threads

Groups associated with this forum:

View associated groups
Article updates
Moderators

We have a brilliant team of more than 60 volunteers looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is moderated by:

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22

Registered Office: International House, Queens Road, Brighton, BN1 3XE

Shortcuts

Get Started

TSR Group

Using TSR

Info

Connect with TSR

Reputation gems:
The Reputation gems seen here indicate how well reputed the user is, red gem indicate negative reputation and green indicates a good rep.
Post rating score:
These scores show if a post has been positively or negatively rated by our members.