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Here's my "journey" NZMOC' Heather Macbeth'

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Title: Here's my "journey" NZMOC' Heather Macbeth'


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  • Here's my "journey" - NZMOC. Heather
    Macbeth.
  • My journey to the 2004 International
    Mathematical Olympiad began two and a half years
    earlier, the summer after my third-form year,
    when I attended my first NZMOC January camp. In
    one of the most influential weeks of my life so
    far, I caught a glimpse of what the NZ Maths
    Olympiad program could offer me challenge,
    competition, glory, beautiful mathematics,
    lifelong friendships, and of course the obvious
    reward of a trip to an exciting and faraway place
    in a few years if I worked hard enough in the
    meantime. Within a few days I was hooked by the
    end of the week I had set my goals. I would
    return to camp the next year, 2003, and be picked
    as a reserve for New Zealands IMO team that
    year. In 2004, with two years experience behind
    me, I would be good enough to make the team
    proper, and maybe as a seventh-former in 2005 I
    could win a medal.

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  • After a year of weekly trainings and
    independent study, I attended my second January
    camp and, as Id hoped, was made a reserve for
    the 2003 team. This meant that in 2003, as well
    as the usual Monday training and private study, I
    had six months of assignments and exams the
    same training that the team itself received.
    This is designed to develop your ability to solve
    difficult IMO-level problems (as opposed to the
    easy problems encountered at the January camp!)
    The training was a struggle for me but it was
    worthwhile, since it meant that the next year,
    2004, I found the camp and team selection tests
    comparatively easy, and finally was chosen for
    the NZ IMO team.

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  • Again I worked through months of training
    books, notes, assignments, tests. For a month
    before I left I counted down the days, and
    finally the day arrived when I met up with the
    other Cantabrians and flew up to Auckland. Two
    weeks of intensive training followed some in
    Auckland, some in Greece. At its worst this was
    a discouraging slog at its best this was the
    most challenging and inspiring maths Ive ever
    seen. Its impossible to feel prepared for the
    IMO, but by the last day or so I began to relax a
    bit and feel calmer.

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  • The IMO itself was all Id imagined. The
    exams went well and I won a bronze medal. Greece
    was beautiful, busy, hot and historic. The other
    teams were stimulating company we were
    inseparable from the Irish, and developed
    friendly relations with everyone from Britain to
    Iran and from Luxembourg to (gasp!) Australia.
    The whole trip was as near perfect as it was
    possible to be.

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  • So what have I got out of it? Well, a trip,
    obviously. It was my first time in Europe and it
    was really neat for me, having studied Greek
    language, to be able to visit Greece. Secondly,
    lots of friendships. The Maths Olympiad program
    is great for meeting people from all across New
    Zealand and from all over the world. The people
    involved in Olympiad maths tend to be interesting
    and extremely multitalented, and of course they
    share my obsession with maths. Im still in
    touch with half the people I met at my first
    January camp, two and a half years ago.
  • Naturally, Im also involved in the Maths
    Olympiad program because I love the maths. The
    problems are beautiful and elegant, and the
    Eureka moment that comes from solving one is
    enough to put me in a good mood for days. I also
    enjoyed the glory that comes from representing
    New Zealand at such a prestigious event my
    fifteen seconds of fame! And being a very
    competitive person, I love the thrill of
    competing at a very high level.

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  • For me, though, the best thing about the Maths
    Olympiad program is the challenge. At my first
    January camp, used to being reasonable
    effortlessly top of my classes in maths, I found
    it incredibly stimulating to feel stupid for a
    week or so. Olympiad maths is simply in a
    different league of difficulty from anything
    taught at school there is a huge amount of
    material to learn, and a huge amount of
    experience needs to be gained. When you dont
    find any school work particularly difficult, its
    very appealing to have a goal which takes several
    years of really hard work to accomplish. And
    accomplishing that goal in my case a bronze
    medal makes you feel incredibly satisfied.

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  • Where to from here?

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2007
  • September problems are out in schools now and are
    on the web at
  • www.nzamt.org.nz
  • Three digit problems competition 23rd to 26th
    October. Precursor to 2008 NZ Mathematical
    Olympiad competition.

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  • New Zealand Mathematical Olympiad
  • January Camp Selection Problems
  • Junior Problems
  • 1. Which fraction 7777777773 , or 8888888882
  • 7777777778 8888888887
    is greater? Give reasons.
  • 2. Prove that if a(abc) lt 0, then quadratic
    equation ax2bxc 0 has two distinct real
    roots.
  • 3. Find a positive integer N whose decimal
    representation contains nine distinct digits such
    that among all the two-digit integers obtained by
    deletion of any seven digits from N there is at
    most one prime number. (If a two-digit integer
    obtained as a result of deletion of seven digits
    starts with a 0, it is considered to be a
    one-digit integer. For example, 07 is 7.)

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  • NZMOC January Camp Selection Problems
    Instructions
  • These problems will be used by the NZMOC to
    select students for its International
    Mathematical Olympiad Training Camp to be held in
    Christchurch between the 13th and 19th of January
    2008. At this Camp the New Zealand squad will be
    selected for the Asia-Pacific Olympiad and
    candidates will be chosen to continue to work in
    the training program prior to selection for the
    NZ team for the IMO competition to be held in
    Spain in July 2008.
  • There are two sets of problems junior problems
    and senior problems.
  • If you are currently in year 12, or you have
    attended a January camp previously, then you may
    only attempt the senior problems.
  • If you are currently up year 11 and you have
    never previously attended a January camp, then
    you may attempt both sets of problems (and your
    results from both sets will be taken into account
    in the selection process).

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  • New Zealand Mathematical Olympiad
  • January Camp Selection Problems
  • Senior Problems
  • Some goods, with total weight 18 tonnes, are
    packed in n 35 containers in order to be
    delivered to an orbiting space station. Seven
    shuttles are available to do this, but each can
    deliver no more than 3 tonnes of goods. It is
    known that the shuttles can simultaneously
    deliver any 35 of the n containers. Prove that
    they can simultaneously deliver all the
    containers.
  • 2. A brother and a sister cut a round pizza with
    two mutually perpendicular cuts not passing
    through the centre. The boy took the smallest and
    the largest pieces and the girl took the
    remaining two. Who got more pizza? (Or, cant we
    be sure?)

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  • New Zealand Maths Olympiad Committee
  • Three Digit Problems, 2007
  • The competition may be held anytime between
    October 23 and October 26, 2007. The time allowed
    for doing the competition should not be more than
    one hour. Different classes may do the
    competition at different times, even on different
    days.
  • The three digit problems are just that. The
    answer to each question is a three digit number,
    i.e. an integer between 100 and 999 inclusive. An
    answer is either correct or incorrect (that is,
    no partial credit for having one or two digits
    correct!)

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  • For which three digit number abc is the quantity
  • (a - b) X (c - b) as large as possible?
  • 2. In a recent test against Italy, the All Blacks
    scored on 21 different occasions. A scoring play
    is one of
  • a drop or penalty goal (3 points), a try (5
    points), or a conversion (2points). A conversion
    can only be scored immediately after a successful
    try.
  • If M is the greatest number of points that the
    All Blacks might have scored, and m the least
    number
  • of points that they might have scored, then what
    is 2M m?
  • 3. What is the sum of the prime factors of 33330?
  • 4. A geometric sequence is a list of numbers in
    which the ratio of each successive pair of
    numbers is the same (for example 3, 6, 12, 24, .
    . . ).
  • If the first three terms of a geometric
    sequence are 64, 96 and 144, then what is its
    first odd term?

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