Sponsored Ad:
Results 1 to 2 of 2

Thread: recurring and non recurring decimals

  1. #1
    Within my grasp! skumar's Avatar
    Join Date
    Apr 2005
    Posts
    156
    Rep Power
    10


    Good post? Yes | No

    recurring and non recurring decimals

    Sponsored Ad:
    Can someone tell me any rule which can be applied to find the values of x and y so as the fraction x/y will be recurring or non recurring decimal.
    To put in other words, for what values of x,y will a fraction x/y will be a recurring or a non recurring decimal.

  2. #2
    Within my grasp! skumar's Avatar
    Join Date
    Apr 2005
    Posts
    156
    Rep Power
    10


    Good post? Yes | No

    Re: recurring and non recurring decimals

    Got some interesting facts. That helps to solve my query..

    Some interesting facts about recurring decimals
    A denominator containing only 2 or 5 as factors gives us a non-recurring decimal function. For example,

    1/2 = 0.5
    1/4 = 1/(2*2) = 0.25
    1/8 = 1/ (2*2*2) = 0.125
    1/5 = 0.2
    1/25 = 1/(5*5) = 0.04 and so on
    Denominators containing only 3, 7, 11 or higher prime numbers as factor and not even a single 2 or 5 given recurring decimals. For example

    1/3 = 0.3
    1/7 = 0.142857
    1/9 = 0.1
    1/11 = 0.09
    1/13 = 0.076923
    1/17 = 0.05882352/94117647 and so on
    A denominator with factors partly of the first type and party of the second type, give us a mixed, i,e. party recurring and party non-recurring decimal. For example,

    1/6 = 1/(2*3) = 0.16
    1/15 = 1/ (3*5) = 0.06
    1/18 = 1/ (2*9) = 0.05
    1/22 = 1/ (2*11) = 0.045 and so on.
    Denominator containing all digits 9.
    It is very easy to find the decimal equivalent of a faction with denominator containing all nines. It is recurring decimal with digits in the numerator. For example,

    1/9 = 0.1
    2/9 = 0.2
    5/9 = 0.5
    23/99 = 0.23
    50/99 = 0.50
    112/999 = 0.112 and so on.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Decimals
    By priyaanka in forum GMAT Data Sufficiency
    Replies: 2
    Last Post: 03-30-2008, 03:30 PM
  2. Decimals
    By hungvuong in forum GMAT Problem Solving
    Replies: 5
    Last Post: 12-29-2007, 02:17 PM
  3. Decimals
    By phs007 in forum GMAT Data Sufficiency
    Replies: 3
    Last Post: 09-05-2005, 09:07 PM
  4. Decimals
    By luckyme in forum GMAT Data Sufficiency
    Replies: 6
    Last Post: 05-24-2005, 11:34 AM
  5. PS - decimals
    By mba4me in forum GMAT Problem Solving
    Replies: 7
    Last Post: 09-12-2004, 09:19 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

SEO by vBSEO ©2010, Crawlability, Inc.