Search found 1007 matches
- Thu Mar 07, 2019 11:45 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Higher Secondary 2019/1
- Replies: 1
- Views: 7689
Re: BdMO National Higher Secondary 2019/1
Hint
Answer
- Thu Mar 07, 2019 11:27 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Higher Secondary 2019/2
- Replies: 1
- Views: 7839
Re: BdMO National Higher Secondary 2019/2
Hint
Problem Source
Solition
- Thu Mar 07, 2019 8:15 pm
- Forum: Junior Level
- Topic: BDMO 2019 : National : Junior : Pblm 05
- Replies: 9
- Views: 21898
Re: BDMO 2019 : National : Junior : Pblm 05
BdMO National Junior 2019 P5
Answer:$2073$
By Using $PIE$math_hunter wrote: ↑Thu Mar 07, 2019 11:52 am$2,3,5,6,7,10,11,12,13,...$ is the sequence of integers without all square and cube numbers. What is the $2019^{th}$ number?
Answer:$2073$
- Thu Mar 07, 2019 12:22 am
- Forum: Junior Level
- Topic: Area of a hexagon
- Replies: 2
- Views: 10432
Re: Area of a hexagon
You can get a solution here.
- Wed Mar 06, 2019 11:52 pm
- Forum: Junior Level
- Topic: শেষ ৩টি অঙ্ক কত?
- Replies: 12
- Views: 24461
Re: শেষ ৩টি অঙ্ক কত?
No need to mension.
- Wed Mar 06, 2019 11:47 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Higher Secondary 2009/2
- Replies: 3
- Views: 8981
Re: BdMO National Higher Secondary 2009/2
Full Solution $\dfrac{x^2}{2}+\dfrac{5}{y} =7$ $\Rightarrow \dfrac{x^2}{2}=7-\dfrac{5}{y}$ $\Rightarrow x^2y=14y-10$ $\Rightarrow y(14-x^2)=10$ $10=1×10=2×5=(-2)×(-5)$ $y=1 \Rightarrow 14-x^2=10\Rightarrow x^2=4\Rightarrow x=+5,-5$ $y=2 \Rightarrow 14-x^2=5 \Rightarrow x^2=9 \Rightarrow x=+3,-3$ $y...
- Wed Mar 06, 2019 9:15 pm
- Forum: News / Announcements
- Topic: BdMO 2019 NEWS
- Replies: 6
- Views: 17625
Re: BdMO 2019 NEWS
I'm new in the list of winners......so some annoying question from me :mrgreen: What are the rules of selection for camp? Do all higher secondary / secondary winners get into camp? I did not receive any letter/invitation, so I'm asking :D Congratulation to you :D :) :D .No,all higher secondary / se...
- Wed Mar 06, 2019 9:12 pm
- Forum: Junior Level
- Topic: শেষ ৩টি অঙ্ক কত?
- Replies: 12
- Views: 24461
Re: শেষ ৩টি অঙ্ক কত?
The product=$1×2×3×...×1000×...×2018$
So,it must be divided by $1000$.
As example $1×2×3×4×5$ is divided by $1,2,3,4,5$.
- Wed Mar 06, 2019 4:45 pm
- Forum: Junior Level
- Topic: শেষ ৩টি অঙ্ক কত?
- Replies: 12
- Views: 24461
Re: শেষ ৩টি অঙ্ক কত?
$\fbox {000}$math_hunter wrote: ↑Wed Mar 06, 2019 12:18 pm1x2x3x4x5x.....x2018 এর শেষ তিনটি অঙ্ক কত? (একক, দশক, শতক)
The product is divisible by $1000$.So,the last three digits of the product must be $000$.
- Wed Mar 06, 2019 9:23 am
- Forum: Divisional Math Olympiad
- Topic: Dhaka Secondary 2016 P3
- Replies: 1
- Views: 10047
Re: Dhaka Secondary 2016 P3
Solved here.