All About Math Olympiad Training & Questions
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No worries, Maths Hub. My gal spotted the mistake while she was doing d sum. Thx anyway:)
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Just take 30x12 = 360 (not possible), then subtract 209, then check if it is divisible by 7.
Since 209 is not divisible by 12, she must have at least one question wrong.
29 x 12 = 348, -209 = 139 (very far)
22 x 12 = 264, -209 = 55 (not multiple of 7)
21 x 12 = 252, -209 = 43 (not multiple of 7)
20 x 12 = 240, - 209 = 31 (not multiple of 7)
19 x 12 = 228, - 209 = 19 (not multiple of 7)
18 x 12 = 216, -209 = 7
Anything lower, not possible.
One solution confirmed. Why so complicated? -
Congrats to all NMOS 2013 invitation round qualifying students!
http://oas.nushigh.edu.sg/NMOS/NMOS%202013%20Special%20Round%20Results.pdf
:rahrah: :rahrah: :rahrah: :rahrah: -
My ds’ teacher informed him about the 2nd round on Sat but did not mention the time- anyone has any idea?
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Hi burp,
Ds’ school has arranged school bus for the pupils. He’s told to meet in school at 7.30am and is expected to return to school by 11.30 am. -
Tks, mikiway ! All the best for this Sat : )
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congrats to burp and mikyway ds! wish them luck! :rahrah:
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MathsOlympiadtrainer:
congrats to burp and mikyway ds! wish them luck! :rahrah:
Does anyone know when the results of the special round be available?
Thanks :roll: -
Shirly:
Should be soon but if in top 20, should receive the news from teacher by now as they have to start IMSO training very soon.MathsOlympiadtrainer:
congrats to burp and mikyway ds! wish them luck! :rahrah:
Does anyone know when the results of the special round be available?
Thanks :roll: -
NMOS results: http://oas.nushigh.edu.sg/NMOS/
Top 10 schools and top 30 individuals in alphabetical order
Congrats to all :rahrah: