Search found 62 matches

by Ragib Farhat Hasan
Thu Sep 27, 2018 7:31 pm
Forum: Algebra
Topic: Minimum value
Replies: 4
Views: 51011

Re: Minimum value

Apparently, the denominators should be 1. So the minimum value will be 6.
by Ragib Farhat Hasan
Mon Sep 03, 2018 8:54 pm
Forum: Higher Secondary Level
Topic: Geometric question...Need help
Replies: 1
Views: 3377

Re: Geometric question...Need help

I think the answer is 6.
by Ragib Farhat Hasan
Mon Sep 03, 2018 1:42 am
Forum: Secondary: Solved
Topic: Divisional MO Secondary 2010
Replies: 2
Views: 3776

Re: Divisional MO Secondary 2010

Answer to ques. no. 12 is 201.
by Ragib Farhat Hasan
Mon Sep 03, 2018 1:33 am
Forum: Higher Secondary Level
Topic: A problem of combinatorics
Replies: 9
Views: 10644

Re: A problem of combinatorics

Hint Use function Answer Correct answer $\fbox {3885}$ The correct answer of this problem is 546, and it is an established solution. This problem actually appeared in the National Math Olympiad 2015 in secondary and higher secondary categories. Moreover, read the question again. It says that no one...
by Ragib Farhat Hasan
Mon Sep 03, 2018 1:31 am
Forum: Higher Secondary Level
Topic: A problem of combinatorics
Replies: 9
Views: 10644

Re: A problem of combinatorics

Mathlomaniac wrote:
Fri Mar 09, 2018 5:49 pm
36×35/2 =630
Read the problem again.
by Ragib Farhat Hasan
Mon Sep 03, 2018 1:22 am
Forum: Higher Secondary Level
Topic: A problem of combinatorics
Replies: 9
Views: 10644

Re: A problem of combinatorics

The actual solution to this problem is like this- 1 can shook hands with a max. of 35 people. Then 2 can shook hands with a max. of 34 people (this is the total handshake made including the handshake with the 1st person). Then 3 with max. 33, 4 with 32, 5 with 31, 6 with 30, 7 with 29 and 8 with 30...
by Ragib Farhat Hasan
Fri Aug 31, 2018 11:21 pm
Forum: Combinatorics
Topic: Dhaka H. Secondary 2014/7
Replies: 0
Views: 4261

Dhaka H. Secondary 2014/7

If A = {1, 2, 3… 11, 12} then how many subsets of A are possible where the minimum number of element is 2 and no two numbers are consecutive.
by Ragib Farhat Hasan
Wed Aug 29, 2018 7:55 pm
Forum: H. Secondary: Solved
Topic: Dhaka Higher Secondary 2010/9
Replies: 7
Views: 5129

Re: Dhaka Higher Secondary 2010/9

Ragib Farhat Hasan wrote:
Sat Jan 16, 2016 8:16 pm
Total no. of numbers formed is 12.
The maximum sum is 888.
I made an error. Total no. of numbers formed will be 20, and max. sum is 888.
by Ragib Farhat Hasan
Tue Aug 28, 2018 2:15 am
Forum: Social Lounge
Topic: Chat thread
Replies: 53
Views: 38450

Re: Chat thread

#make_BdMO_forum_great_again We're gonna make a wall, and we'll get the bashers to pay for it! You received lesser amount of response than Trump. :lol: Zawadx, talk about your IMO experience, some unknown stories. That might revive this forum. ;) But yeah, we the 'BDMO batch of 2018' is currently b...