Search found 35 matches

by NABILA
Thu Aug 15, 2019 10:50 pm
Forum: Chemistry
Topic: Isobar
Replies: 2
Views: 54306

Isobar

What is ISOBAR
by NABILA
Thu Aug 15, 2019 10:42 pm
Forum: Algebra
Topic: 0^0=1!
Replies: 5
Views: 41116

Re: 0^0=1!

Give some logic. It's still not clear
by NABILA
Wed Feb 20, 2019 8:55 am
Forum: Secondary Level
Topic: Someone ans it.
Replies: 1
Views: 5430

Someone ans it.

Imagine you have $5$ green and $5$ blue balls in a box. 2 balls are taken from the box what is the probability of at least one ball will be blue. What is the probability of those two balls will green
by NABILA
Sat Jan 19, 2019 5:40 pm
Forum: Secondary Level
Topic: Devide by $6$
Replies: 8
Views: 3839

Re: Devide by $6$

I mean at first I was wrong. Then, I've tried to solve it and found $4$.. Now,I think I'm wrong. :oops:
by NABILA
Fri Jan 18, 2019 5:48 pm
Forum: Secondary Level
Topic: Devide by $6$
Replies: 8
Views: 3839

Re: Devide by $6$

$VETO$.Now I can see $4$.
by NABILA
Fri Jan 18, 2019 5:25 pm
Forum: National Math Olympiad (BdMO)
Topic: BDMO National Primary 2018/8
Replies: 7
Views: 1596

Re: BDMO National Primary 2018/8

Actually, I didn't solve it. I have used my দর্শনশক্তি। According the question I still think it will be 11.
by NABILA
Thu Jan 17, 2019 3:13 pm
Forum: National Math Olympiad (BdMO)
Topic: BDMO National Primary 2018/8
Replies: 7
Views: 1596

Re: BDMO National Primary 2018/8

আয়তটির দৈর্ঘ্য, প্রস্থ বরাবর বিবেচনা করলে দুটি রাস্তা আছে। 1>7>12 & 1>6>12. প্রস্থ দুটিকে বাদ দিলে মোট 9টি খাড়া & বাকা রেখা আছে। এক্ষেত্রে 1×9×1=9. এখন 2+9=11. এটা আমার ধারনা। কদিন আগেই সম্ভাবনা শিখলাম তো তাই :mrgreen:
by NABILA
Thu Jan 17, 2019 2:54 pm
Forum: Combinatorics
Topic: need the solution
Replies: 5
Views: 4849

Re: need the solution

Hmm. Understood.
by NABILA
Thu Jan 17, 2019 2:51 pm
Forum: National Math Olympiad (BdMO)
Topic: BDMO 2018 junior 10
Replies: 12
Views: 2520

Re: BDMO 2018 junior 10

$\angle COD=20$ and $\angle BOE=40$ So $\angle COD=60$. Now $\angle EAD=\angle COD$. so, $ADOE$ is a cyclic quadrilateral. Join $D,E$. Here $AE={2/3}AB$ and $AD$ is half of $AE$ and their intersected angle is $60$. SO, $AED$ is a $30-60-90$ triangle. So,$ \angle AED=\angle AOD=30$ So,$\angle AOC= 6...
by NABILA
Wed Jan 16, 2019 3:16 pm
Forum: Divisional Math Olympiad
Topic: 2018 Regional Set $2$ Higher Secondary $P6$
Replies: 2
Views: 805

Re: 2018 Regional Set $2$ Higher Secondary $P6$

Didn't understood. Please give some hints.