Welcome! Check out our free B-School Guides to learn how you compare with other applicants.
Login or Register

How many multiple of 3 and 5 between 250 and 300, inclusive

This topic has 2 member replies
Due Rising GMAT Star Default Avatar
13 Jan 2010
51 messages
1 times
How many multiple of 3 and 5 between 250 and 300, inclusive Post Tue Jan 19, 2010 5:21 am
Elapsed Time: 00:00
    How many multiple of 3 and 5 between 250 and 300, inclusive


    Let mee know weather in GMAT can we get question like these which are lengthy and are quite likely to go wrong, for just one number being missed?

    Also please tell me, I am am practising tests from Manhatten TurboCharge Maths. I pick 23 problem solving and 14 datasufficiency questions from book. I get at most three mistakes. Assuming this level of accuracy, Can I get a score of 50 in quant.


    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    ajith GMAT Titan
    21 Sep 2006
    1275 messages
    Followed by:
    2 members
    124 times
    Test Date:
    April 2010
    Target GMAT Score:
    Post Tue Jan 19, 2010 5:36 am
    Due wrote:
    How many multiple of 3 and 5 between 250 and 300, inclusive

    Unfortunately, that question seems to be unclear anyhow if the question was

    "How many multiples of 3 or 5 exists between 250 and 300"

    there are 17 multiples of 3 , there are 11 multiples of 50 and there are 4 multiples of 15

    so total no of distinct numbers is : 17+11 -4 =24 which is not in the list

    Always borrow money from a pessimist, he doesn't expect to be paid back.

    mavsee Just gettin' started! Default Avatar
    19 Jan 2010
    1 messages
    Post Tue Jan 19, 2010 8:02 am
    The question doesnt say distinct -in which case, the answer would be 28 - which is in the list.
    On a seperate note, the way you would solve this to use the following formula.

    no of consecutive terms = last term - first term/difference between each term(constant)

    eg:No of multiples of 3 -

    300-250/3 + 1 =17.
    Note that the you count only the closest integer when you divide (300-250) by 3 and avoid the remainder.

    You would use a similar approach for muliples of 5 and add both.

    Best Conversation Starters

    1 ziyuenlau 45 topics
    2 Mo2men 26 topics
    3 NandishSS 8 topics
    4 rsarashi 6 topics
    5 divsragha 5 topics
    See More Top Beat The GMAT Members...

    Most Active Experts

    1 image description GMATGuruNY

    The Princeton Review Teacher

    101 posts
    2 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    92 posts
    3 image description DavidG@VeritasPrep

    Veritas Prep

    74 posts
    4 image description Rich.C@EMPOWERgma...


    73 posts
    5 image description Jay@ManhattanReview

    Manhattan Review

    58 posts
    See More Top Beat The GMAT Experts