Rangpur Higher Secondary 2011/7

Problem for Higher Secondary Group from Divisional Mathematical Olympiad will be solved here.
Forum rules
Please don't post problems (by starting a topic) in the "Higher Secondary: Solved" forum. This forum is only for showcasing the problems for the convenience of the users. You can post the problems in the main Divisional Math Olympiad forum. Later we shall move that topic with proper formatting, and post in the resource section.
User avatar
Moon
Site Admin
Posts: 751
Joined: Tue Nov 02, 2010 7:52 pm
Location: Dhaka, Bangladesh
Contact:

Re: Rangpur Higher Secondary 2011/7

Unread post by Moon » Thu Feb 03, 2011 2:02 pm

@Shawon: Actually your solution is not correct, and Mehfuj is right. Just check a few more equations (or the whole set of 25 equations!) manually. Actually you have to do like- subtract,add, subtract...so on.
So the ans will be $A-Z=1-2+3-\cdots-26=-13$. :)
"Inspiration is needed in geometry, just as much as in poetry." -- Aleksandr Pushkin

Please install LaTeX fonts in your PC for better looking equations,
learn how to write equations, and don't forget to read Forum Guide and Rules.

User avatar
leonardo shawon
Posts: 169
Joined: Sat Jan 01, 2011 4:59 pm
Location: Dhaka

Re: Rangpur Higher Secondary 2011/7

Unread post by leonardo shawon » Thu Feb 03, 2011 6:42 pm

sorry to argue.. Sorry
Ibtehaz Shawon
BRAC University.

long way to go .....

User avatar
Tahmid Hasan
Posts: 665
Joined: Thu Dec 09, 2010 5:34 pm
Location: Khulna,Bangladesh.

Re: Rangpur Higher Secondary 2011/7

Unread post by Tahmid Hasan » Thu Feb 03, 2011 9:23 pm

moon bhai i have a prob with the prob,u c that there r 25 eqs but the value of the last eq is 26,y?
বড় ভালবাসি তোমায়,মা

Shifat
Posts: 53
Joined: Sun Jul 31, 2011 12:21 pm
Location: Dhaka, Bangladesh

Re: Rangpur Higher Secondary 2011/7

Unread post by Shifat » Tue Aug 16, 2011 1:46 am

amar mone hoi question e r sequence e vul ase..... y+z er value hobar kotha 25..... so amar value ashse 13.. agreed tahmid bro

Ashfaq Uday
Posts: 21
Joined: Tue Sep 27, 2011 12:18 am

Re: Rangpur Higher Secondary 2011/7

Unread post by Ashfaq Uday » Fri Nov 04, 2011 10:34 am

ans is -13.

Post Reply