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Answers to Senior Maths Challenge!!!
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Micky
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#41
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#41
(Original post by Ralfskini)
Is the BMO round much more difficult?
Is the BMO round much more difficult?
It's 3.5 hours long, there are 5 questions, and they normally take a fair bit of thinking.
Personally I enjoy them though, I always like the different way you have to think for maths challenges, and the fact that you don't need to know that much advanced maths (though it can help if you get into a tight spot).
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Juwel
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#42
25 is D, 3. I lost my copy of the answers and I had to ask my mate over the phone, I heard B. But now I remember the question, it was D.
What were the questions and possible answers for the other disputed ones (i.e. 10 and 15)?
What were the questions and possible answers for the other disputed ones (i.e. 10 and 15)?
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Micky
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#43
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#43
(Original post by ZJuwelH)
What were the questions and possible answers for the other disputed ones (i.e. 10 and 15)?
What were the questions and possible answers for the other disputed ones (i.e. 10 and 15)?
Steve Fossett circumnavigated the world in 13.5 days, assume the balloon travelled along a circle of diameter 12750km, roughly what was the average speed of the balloon in km/h
A 12 B 40 C 75 D 120 E 300
15 was discussed a page or two ago:
The number 2003 is prime, how many square numbers are factors of 2003^2003?
A 0 B 1 C 44 D 1002 E 2003
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Juwel
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#44
(Original post by Micky)
10 was the one about the ballonist (it was basically an 'use appropriate approximations' question), I'll cut out the details:
Steve Fossett circumnavigated the world in 13.5 days, assume the balloon travelled along a circle of diameter 12750km, roughly what was the average speed of the balloon in km/h
A 12 B 40 C 75 D 120 E 300
15 was discussed a page or two ago:
The number 2003 is prime, how many square numbers are factors of 2003^2003?
A 0 B 1 C 44 D 1002 E 2003
10 was the one about the ballonist (it was basically an 'use appropriate approximations' question), I'll cut out the details:
Steve Fossett circumnavigated the world in 13.5 days, assume the balloon travelled along a circle of diameter 12750km, roughly what was the average speed of the balloon in km/h
A 12 B 40 C 75 D 120 E 300
15 was discussed a page or two ago:
The number 2003 is prime, how many square numbers are factors of 2003^2003?
A 0 B 1 C 44 D 1002 E 2003
S=D/T=12750(pi)/(13.5x24)=12750(pi)/324 roughly equal to 120. Answer: D
Don't know 15, I left it out and didn't bother to find it out.
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the_one
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#45
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#45
(Original post by ZJuwelH)
I remember getting 10 right.
S=D/T=12750(pi)/(13.5x24)=12750(pi)/324 roughly equal to 120. Answer: D
Don't know 15, I left it out and didn't bother to find it out.
I remember getting 10 right.
S=D/T=12750(pi)/(13.5x24)=12750(pi)/324 roughly equal to 120. Answer: D
Don't know 15, I left it out and didn't bother to find it out.
Fancy giving me some rep and I'll give you some back
(PS: I'm as a guest at the moment because I'm at school
)
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Goat
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#46
Juwel
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#47
Isn't it just that the top 5% get Gold? I don't know the supposed percentages for the others, but you might want to look up their website if you can find it.
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xinxinlu
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#48
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