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AMC and other contests, summer programs, etc.
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Contests & Programs AMC and other contests, summer programs, etc.
AMC and other contests, summer programs, etc.
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Problem 2
evt917   47
N 8 minutes ago by MC_ADe
Source: 2024 AMC 12B #2 / AMC 10B #2
What is $10! - 7! \cdot 6!$?

$
\textbf{(A) }-120 \qquad
\textbf{(B) }0 \qquad
\textbf{(C) }120 \qquad
\textbf{(D) }600 \qquad
\textbf{(E) }720 \qquad
$
47 replies
evt917
Nov 13, 2024
MC_ADe
8 minutes ago
generic whiteboard problem
ostriches88   19
N 33 minutes ago by happypi31415
Source: 2024 AMC10B p16
Jerry likes to play with numbers. One day, he wrote all the integers from $1$ to $2024$ on the whiteboard. Then he repeatedly chose four numbers on the whiteboard, erased them, and replaced them with either their sum or their product. (For example, Jerry's first step might have been to erase $1, 2, 3$, and $5$, and then write either $11$, their sum, or $30$, their product, on the whiteboard.) After repeatedly performing this operation, Jerry noticed that all the remaining numbers on the board were odd. What is the maximum possible number of integers on the board at that time?

$
\textbf{(A) }1010 \qquad
\textbf{(B) }1011 \qquad
\textbf{(C) }1012 \qquad
\textbf{(D) }1013 \qquad
\textbf{(E) }1014 \qquad
$
19 replies
ostriches88
Nov 13, 2024
happypi31415
33 minutes ago
No more topics!
Possibility of USAMO?
MathXplorer10   4
N Yesterday at 8:05 AM by MathXplorer10
Hi guys!


I got a 118.5 on the 12B test this year. I am wondering if it is possible to make USAMO (what do you think the cutoffs would be this year?)

For some background, I got 121.5/127.5 on the 10s last year, and got a 7 on AIME with no extra prep. Is it possible to go from a 7 to a 10 (or whatever I need to get on AIME)?

Thank you!
4 replies
MathXplorer10
Yesterday at 5:06 AM
MathXplorer10
Yesterday at 8:05 AM
Possibility of USAMO?
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MathXplorer10
159 posts
#1
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Hi guys!


I got a 118.5 on the 12B test this year. I am wondering if it is possible to make USAMO (what do you think the cutoffs would be this year?)

For some background, I got 121.5/127.5 on the 10s last year, and got a 7 on AIME with no extra prep. Is it possible to go from a 7 to a 10 (or whatever I need to get on AIME)?

Thank you!
This post has been edited 1 time. Last edited by MathXplorer10, Yesterday at 5:09 AM
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awzhang10
60 posts
#2
Y by
yeah but you'll need to grind hard
you probably need a 12 or 13
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MathXplorer10
159 posts
#3
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Yeah true... you think the cutoffs would be 230s/240s?
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cakeiswaybetterthancookie
92 posts
#4
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Tbf, you will need a *12* on the AIME to be safe which is going to be difficult( cutoff is likely to be in the late 220's, so 231 should be fine). For context, that is going to be pretty hard- I got a 141 on the amc 12, and mock around 9 on AopS mock AIME, and am trying to prepare to get a 10 on the real deal. That means you will have to solve 13 problems( sillies for the loss) which is INSANLY hard- the AIME is like the last 15 on the amc 12, but buffed up even more. You can always try next year. I know I sound cyclical, but its the truth- 12 is going to be objectively hard to get to
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MathXplorer10
159 posts
#5
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Oh ok thank you for the honest feedback! Yeah a 12 would be tough!

Congrats on 141 :)
This post has been edited 2 times. Last edited by MathXplorer10, Yesterday at 8:14 AM
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