Urggh. On the test I spent 20 minutes trying to deal with it with logarithms, and I never found this simple solution......... The 20 minutes I spent on that problem took away time that I could have used to solve #21 and #24, which were really easy.... Hopefully I do better next year.
because 5^867 is between 2^2013 and 2^2014 but if there were only 2 powers of 2 between each power of 5, 5^867 would be between 2^1734 and 2^1735 so to find how many extras there are it's 2013-1734=279
Why are you complaining? I'm sick of people who are fishing for compliments that post a high score. AIME Qualification is about 120, so why are you so upset? Most people don't get into AIME, and you are sad about getting in! I cannot tolerate people who are just dying for attention because they have nothing better to do!
@@deagupta1021 yeah i hate this type of bragging (like saying they are stoopid when they are so smart) so much but im fine with other types of bragging (like saying you got a perfect score or something)
Awesome, simple explanation of a rather difficult problem!
Wow that's quite a simple and smart way without complicated calculation!
i skipped this when taking test, got 145.5 haha :P
dam 145.5
literally nobody asked
dammm
Wait i dont get why its 867*2. why does he multiply 867 by 2?
Because there have to be at least 2 exponents of 2 in between the gap of 5^n and 5*5^n.
Urggh. On the test I spent 20 minutes trying to deal with it with logarithms, and I never found this simple solution.........
The 20 minutes I spent on that problem took away time that I could have used to solve #21 and #24, which were really easy....
Hopefully I do better next year.
I would be so satisfied if I only skipped #21 and #24 and got #25 right...
Can u show us how to solve this problem with logarithms? I can only come up with this simple solution.
Shushu Fang Art of Problem Solving: 2014 AMC 12 A #22
Could not understand the last portion
Uhh, I am too stupid to get it. Actually I just don't know why we should subtract 1734 from 2013.
because 5^867 is between 2^2013 and 2^2014 but if there were only 2 powers of 2 between each power of 5, 5^867 would be between 2^1734 and 2^1735 so to find how many extras there are it's 2013-1734=279
It's been almost a year since I commented on this video, but thanks anyways!
He probably didn't understand that...
wait i get it
This year I got 145 because if the videos.
RandomGuy59 wow!
Why do people keep posting numbers aren't congruent to 0 mod 3.
So your new catchphrase is now "And we're done"?
honestly, it isnt new. I watched that video like 2 years ago and he does that all the time
yup
Uh yeah he always says that...
Has anyone seen the "Buy, *_THIS BOOK_*" one yet?
Me after watching this video: Uhhhhhhhhhhhhhhhhhhhhhhhhh
Richard is a pro...
Gave me a double take there o.o
Miami Ninja
THERE CAN BE ONLY ONE!
It's videos like these that make me feel stooped.
I only got 132 :(
Why are you complaining? I'm sick of people who are fishing for compliments that post a high score. AIME Qualification is about 120, so why are you so upset? Most people don't get into AIME, and you are sad about getting in! I cannot tolerate people who are just dying for attention because they have nothing better to do!
@@deagupta1021 it’s not a high score
@@deagupta1021 yeah i hate this type of bragging (like saying they are stoopid when they are so smart) so much but im fine with other types of bragging (like saying you got a perfect score or something)
I got a 125 on the AMC 10.
Of course you did, because 125 is totally==0 mod 3.
@@user-tn2dk2pg2p fax
Ill never be this good at math :p
He got his education from Princeton.
RandomGuy59 Oh wow. He must be very talented at math.
In Israel we teach in high school so that 80% is technical and only 20% is "creative"
@@זאבגלברד uh ok
Of. Not if.
Awesome, simple explanation of a rather difficult problem!