All About Math Olympiad Training & Questions

[pinky88]

No worries, Maths Hub. My gal spotted the mistake while she was doing d sum. Thx anyway:)

[kiasiparent]

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?

[MathsOlympiadtrainer]

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:

[burp]

My ds’ teacher informed him about the 2nd round on Sat but did not mention the time- anyone has any idea?

[mikyway]

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.

[burp]

Tks, mikiway ! All the best for this Sat : )

[MathsOlympiadtrainer]

congrats to burp and mikyway ds! wish them luck! :rahrah:

[Shirly]

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:

[dagong99]

Shirly:

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:

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.

[mathsnsciencehub]

NMOS results: http://oas.nushigh.edu.sg/NMOS/

Top 10 schools and top 30 individuals in alphabetical order

Congrats to all :rahrah: