plz help me

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prantick
Posts: 12
Joined: Thu Jan 08, 2015 9:00 pm
Location: khulna, bangladesh

plz help me

Unread post by prantick » Fri Jan 09, 2015 11:41 pm

i have solved some questions of national math olympiad. plz help me by checking my answers
2004
question 1 answer 1219
question 3 answer 16,80,000 taka
question 10 answer 10017
2005
question 1 answer 2*2*2*2*13*31
question 2 answer 10,323,577,806,321 ( ten trillion three hundred twenty three billion five hundred seventy seven million eight hundred six thousand three hundred twenty one )
question 3 answer 9 boys & girls
question 5 answer 0.625
question 8 answer in left line 5 , 4 , 2 , in right line 1 , 3 , 7 , in center 6
question 9 answer 45
question 10 answer 120 degree
2006
question 1 answer 2521
question 2 answer 33.33% or in fraction 33 full 1/3
question 4 answer 1st 4000 , 2nd 2000 , 3rd 1000 taka
question 7 answer 20100
question 8 answer in ( left to right ) top 6 , 11 , 10 , in center 13 , 9 , 5 , in bottom 8 , 7 , 12
2007
question 1 answer 8 time
question 2 answer 90 tickets
question 6 answer 40 minutes
question 7 answer 153
2008
question 1 answer 143
question 2 answer 15
question 7 answer 40
question 8 answer 7
2009
question 1 answer 43 cows + 28 human = (43*4+28*2) = (172 + 56) = 228 legs
question 2 answer 3
question 3 answer 9 days
question 4 answer x = 1
question 6 answer 36 degree & 144 degree
2010
question 1 answer prime number 239 , 361 and composite number 111 , 455
question 2 answer average 34.5 millimeter & average more 6 millimeter
question 5 answer I'm confused.
if yes, (top to right) 8 , 1 , 5 , 9 , 4 ,1 0 , 6 , 2 , 7, 3
if no, 4 minus any number it is less than 4.
2011
question 1 answer 5/3
question 2 answer 1
question 5 answer 10
2012
question 1 answer 123 + 321 = 444
question 2 answer 25th day
question 4 answer 96896
question 5 answer 171
question 6 answer 125250
prove: এখানে s = 1 থেকে 500 পর্যন্ত লিখি। আবার s = 500 থেকে 1 পর্যন্ত লিখি। প্রতি ক্ষেত্রে যোগফল 501 আসে। 1 থেকে 500 পর্যন্ত মোট 500 টি সংখ্যা আছে। তাই 501*500 লিখি এবং 1 থেকে 500 পর্যন্ত সংখ্যাগুলো 2 বার করে আছে। তাই যোগফল 2s লিখি। এরপর s এর মান অর্থাৎ 1 থেকে 500 পর্যন্ত সংখ্যাগুলোর যোগফল বের করার জন্য প্রতি ক্ষেত্রে সংখ্যাগুলোর যোগফল ও মোট সংখ্যার গুনফল্কে 2 দ্বারা ভাগ করে 1 থেকে 500 পর্যন্ত সংখ্যাগুলোর যোগফল বের করি। ( s = 1 + 2 + 3 + 4 + ............. + 497 + 498 + 499 + 500 ধরে )
2013
question 1 answer 7 days
2014
question 1 answer 2 + 3 + 4 = 9 (3 square)
question 2 answer 4 যে সংখ্যা 10 দ্বারা বিভাজ্য তা 5 দ্বারাও বিভাজ্য। অর্থাৎ, ভাজক 10 হলে ভাগশেষ যদি 5 , 6 , 7 , 8 , 9 হয় তবে তা 5 এর ক্ষেত্রে যথাক্রমে 0 , 1 , 2 , 3 , 4 এরা ভাজক 5 এর ক্ষেত্রেও একই ভাগশেষ, আবার 10 এর ক্ষেত্রেও একই ভাগশেষ হবে।
question 3 answer 35 pieces marble
question 6 answer 12 : 70 hours
question 7 answer 20

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*Mahi*
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Re: plz help me

Unread post by *Mahi* » Tue Jan 13, 2015 11:38 am

There are already posts in this forum about the problems you posted. Please search for those in the primary level forum, as discussing about this many problems at once in a single topic is quite impossible.
Please read Forum Guide and Rules before you post.

Use $L^AT_EX$, It makes our work a lot easier!

Nur Muhammad Shafiullah | Mahi

prantick
Posts: 12
Joined: Thu Jan 08, 2015 9:00 pm
Location: khulna, bangladesh

Re: plz help me

Unread post by prantick » Sat Jan 17, 2015 4:04 pm

vaia i've got solve of some problem....... so i posted it in forum

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