Search found 999 matches

by samiul_samin
Thu May 16, 2019 10:40 am
Forum: Physics
Topic: BdPhO Regional (Dhaka-South) Higher Secondary 2019/2
Replies: 2
Views: 379

Re: BdPhO Regional (Dhaka-South) Higher Secondary 2019/2

SINAN EXPERT wrote:
Fri Apr 26, 2019 8:55 pm
Solution:
BdPhO Regional (Dhaka-South) Higher Secondary 2019(3S).png
How did you draw this?
by samiul_samin
Thu May 16, 2019 10:37 am
Forum: National Math Olympiad (BdMO)
Topic: BdMO National Secondary 2018:Full Solution
Replies: 2
Views: 518

Re: BdMO National Secondary 2018:Full Solution

SINAN EXPERT wrote:
Thu Apr 25, 2019 8:19 pm
samiul_samin wrote:
Mon Feb 25, 2019 1:45 pm
All solution of the problems of BdMO National Secondary $2018$ are available here.

Made by Soyeb Pervez Jim
How did you know about that?
From the facebook page of Parallel Math School.
I mean this file is posted by Soyeb Pervez Jim.
by samiul_samin
Thu May 16, 2019 10:36 am
Forum: Algebra
Topic: 0^0=1!
Replies: 2
Views: 342

Re: 0^0=1!

SINAN EXPERT wrote:
Wed Apr 24, 2019 4:57 pm
Yeah, that's not any joke! I'm really gonna prove that!
We know, $2^6=64$
Again, $2^6=(2+0)^6=6_{C_0}2^60^0+6_{C_1}2^50^1+6_{C_2}2^40^2+...=64*0^0$ $⇒64=64*0^0$
Which is a clear proof of $0^0=1$.
True to say, I haven't found any mistake here. :D
Why $64\times 0^0=64$?
by samiul_samin
Wed Apr 10, 2019 10:18 am
Forum: National Math Olympiad (BdMO)
Topic: BdMO National Higher Secondary 2019/9
Replies: 2
Views: 410

Re: BdMO National Higher Secondary 2019/9

No need to draw a figure?
by samiul_samin
Wed Apr 10, 2019 10:17 am
Forum: Combinatorics
Topic: how to solve this?
Replies: 2
Views: 364

Re: how to solve this?

Formula$\dbinom{n-1}{k-1}$
You can get a link of nice book
Here
by samiul_samin
Wed Apr 10, 2019 10:12 am
Forum: National Math Olympiad (BdMO)
Topic: BdMO-2014 circled pentagon
Replies: 2
Views: 325

Re: BdMO-2014 circled pentagon

$ABCDE$ is a circled pentagon. $AC= 2$, $AD= 3$, $BD=5$, $BE =1$ and $\dfrac{CD}{DE} = \dfrac{10}{3}$, $\dfrac{BC}{CE} = \dfrac{a}{b}$ (where $a$ and $b$ are coprime) How to find the value $a-b$? $|AB| < |AC| \cdots$ so $|AD| + |AB| < |AD| + |AC| = 2 + 3 = 5 = |BD|$ so is there a triangle $ΔABD?$ R...
by samiul_samin
Wed Apr 10, 2019 10:09 am
Forum: Social Lounge
Topic: Collecting BdMO Problems
Replies: 3
Views: 411

Re: Collecting BdMO Problems

Great, bro! You are doing such job which is heavenly helpful to all! By the way, you are working hard for the forum. So, you deserve thanks from all of us. You was the first person who helped me in this forum a year ago, Samiul Bhai. I will never forget that. Last of all, A Respectful Salam. It's m...
by samiul_samin
Wed Apr 10, 2019 10:08 am
Forum: Site Support
Topic: dead forums
Replies: 1
Views: 323

Re: dead forums

Badhonholmes wrote:
Sun Apr 07, 2019 7:39 pm
we need a alive forum. no one answers or replies.
No one is interested to be active.That's why ...
by samiul_samin
Sun Mar 24, 2019 9:19 pm
Forum: Junior Level
Topic: BDMO 2016 Regional
Replies: 12
Views: 1291

Re: BDMO 2016 Regional

math_hunter wrote:
Thu Mar 14, 2019 7:04 pm
No need to get because I've already solve it
The answer is 112.
Solution?
by samiul_samin
Sun Mar 24, 2019 9:17 pm
Forum: National Math Olympiad (BdMO)
Topic: BdMO National Primary 2019#5
Replies: 2
Views: 417

Re: BdMO National Primary 2019#5

math_hunter wrote:
Fri Mar 15, 2019 7:11 pm
It's a very easy problem.
The answer is 17.
Yes.
(Not easy for a student of class 3 :P :P :P )