Hi,
I was trying to solve this, but didn't understand how, and the solution was to confuusing. Please help.

My younger brother mocked the 2024 AMC10A and AMC10B .
He got a 109.5 (1,2,3,4,5,6,7,8,9,10,11,12,15,17,19,23),
but somehow only got like an 80 on the AMC10B,
but statistics show it should technically be the opposite.

Did anyone else think the 2024 AMC10A was easier than 2024 AMC10B?

hope cutoffs arent too high this year

Will 239.5 qualify for usajmo?

Hi everyone,

Is the AMC 10 problem series useful for boosting your score and qualifying for AIME? I've heard it is a bit outdated but some people say it is helpful. I have already taken the MC/AMC 8 Advanced course from AOPS, and I know it definitely helped me with Mathcounts and AMC 8.

My plan in the future is to finish the intro to c+p book in the spring, then in the summer intro to geo, and the rest of the year, if I have time, I will do intro to number theory (this is all assuming I don't procrastinate lol). I want to qualify for AIME not necessarily this year, but definitely next year.

So with all that considered, would the problem series be a good class for me to take? If not, is there any other class (doesn't have to be from AOPS) or resource that will be useful to me? I want to do as much as possible before high school (im in 8th grade rn). Btw, I mocked the 2024 AMC 10b today and got an 81 (somehow i sillied number one).

How many subsets of contain at least one prime number?

How many distinct values of satisfy where denotes the largest integer less than or equal to ?

I am hoping to participate in the USAMTS this fall, and I wanted to know of any resources to help me study for it, as I can't really find anything online about preparing for USAMTS. I have no experience in proofs (except two column lol), so I want some resources for that. I also looked at some of the problems and they looked really hard and heard the problems are AIME/USA(J)MO level, and that is nowhere near my level. For reference, when I mocked the 2024 amc 10b, I got an 81 (but I sillied number one). I do plan to finish the intro series this year (assuming I don't procrastinate), so maybe that will help. Also, are the puzzles for question one difficult? I know you don't have to provide a proof for those questions.

What's the probability I make it?

Do not always trust the cutoffs that AoPS users predict. This is mainly because:
1) Usually, AoPS users are much smarter than typical test takers,
2) Users will tend to be more biased towards themselves and their friends/siblings by lowering/increasing cutoffs,
resulting in users not always provide an honest opinion,
3) Difficulty varies depending on person to person; this can include reading problems, being better at a specific subject, etc.
In addition, AoPS users are not perfect; the only way that can determine what the cutoffs are is what the MAA releases. Cutoffs can depend on a lot of factors, for example, participation. Don't always trust people's word; last year I got a 100.5 on AMC 10B and I ran polls that showed that 3 out of 4 people voting on my poll believed that I would make AIME and most AoPS users predicted an AIME score of around 99-102; AIME floor that year was 105. The only way that we can find out what the AIME cutoffs are is when MAA releases them.