MCQ highest
- Thanic Nur Samin
- Posts:176
- Joined:Sun Dec 01, 2013 11:02 am
A national math contest consisted of $11$ multiple choice questions, each having $11$ possible choices, of which only $1$ of the choices is correct. Suppose that $111$ students actually wrote the exam, and no two students have more than one answer in common. The highest possible average mark for the students can be expressed as $a/b$ where $a,b$ are coprime positive integers. What is the value of $a+b$?
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- Posts:22
- Joined:Sat Dec 14, 2013 3:28 pm
Re: MCQ highest
Yeeeeees!!!!!!!!! Got it!!! Highest possible average is $121/111$. So, $a + b = 121 + 111 = 232$
Re: MCQ highest
It's a problem from Brilliant.org. The problem name is Mathematics Exam (Login required to see the problem/solution).
I'm posting a solution posted by a brilliant member named Patrick Corn.
$\Rightarrow$ PS2 -
If they just needed an answer, they would just use a computer. So kindly practice posting full solutions.
I'm posting a solution posted by a brilliant member named Patrick Corn.
$\Rightarrow$ PS1 - If you saw this on brilliant, this is kind of cheating. Please do not abuse this opportunity.Patrick Corn wrote:
$\Rightarrow$ PS2 -
@Nayeemul Islam Swad, please post your full solution. People actually post, because they do not know how to approach or solve the full problem.Nayeemul Islam Swad wrote:Yeeeeees!!!!!!!!! Got it!!! Highest possible average is $121/111$. So, $a + b = 121 + 111 = 232$
If they just needed an answer, they would just use a computer. So kindly practice posting full solutions.
Please Install $L^AT_EX$ fonts in your PC for better looking equations,
Learn how to write equations, and don't forget to read Forum Guide and Rules.
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." - Sherlock Holmes
Learn how to write equations, and don't forget to read Forum Guide and Rules.
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." - Sherlock Holmes
- Tahmid Hasan
- Posts:665
- Joined:Thu Dec 09, 2010 5:34 pm
- Location:Khulna,Bangladesh.
Re: MCQ highest
Lord pcoLabib wrote: I'm posting a solution posted by a brilliant member named Patrick Corn.
বড় ভালবাসি তোমায়,মা