Search found 23 matches
- Sun Feb 23, 2014 11:15 pm
- Forum: Test Forum
- Topic: Bdmo National2014: junior 5
- Replies: 2
- Views: 9121
Bdmo National2014: junior 5
A new is to be formed by removing some terms from the series 1,2,3,4..............,30 such that no term of the new series is obtained if any term of the new series is doubled. Maximum how many terms can there in new series?
- Sun Feb 23, 2014 10:52 am
- Forum: Test Forum
- Topic: Bdmo 2014 national: junior 04
- Replies: 4
- Views: 10656
Re: Bdmo 2014 national: junior 04
let, $x$ is a 5 digit number. If we place 1 at the right most of $x$ we get the original 6 digit number. so the original 6 digit number is $10x+1$ again if we place 1 at the left most of $x$ we get the new 6 digit number. so the new 6 digit number is ${10}^{5}+x$ given the new number is $\frac{1}{3...
- Fri Feb 21, 2014 6:29 pm
- Forum: Test Forum
- Topic: Bdmo 2014 national: junior 04
- Replies: 4
- Views: 10656
Bdmo 2014 national: junior 04
The unit digit of a six digit number is 1 and it is removed, leaving a five digit number. The removed unit digit is 1 is then placed at the far left of the five digit number,making a new six digit number. If the new number is 3/1 of the original number,what is the original number?
- Fri Feb 21, 2014 12:48 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2014: Junior 10
- Replies: 4
- Views: 3996
Post:Bbmo national2014:junior 03
Subrata has invented a new type of clock,according to which there are 15 hours in each day and 80 minutes in each hour.for example Subrata's clock shows 10.00 when the actual time is 16.00 in a traditional clock. If the time is 20.36 in a traditional clock,then what will be the time in Subrata's clo...
- Fri Feb 21, 2014 12:09 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2014: Junior 10
- Replies: 4
- Views: 3996
Re: BdMO National 2014: Junior 10
Labib, write in bangla. I'm not expert in English
- Fri Feb 07, 2014 11:12 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2012: Junior 5
- Replies: 5
- Views: 5845
Re: BdMO National 2012: Junior 5
Brother please show your ans of 1st partArafat wrote:I could solve the 1st part only....can anyone explain the another one.....
- Fri Jan 31, 2014 2:55 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2013: Junior 6
- Replies: 12
- Views: 8889
Re: BdMO National 2013: Junior 6
I want to know what is the final answer
- Fri Jan 31, 2014 10:56 am
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National Primary 2011/3
- Replies: 2
- Views: 3133
Re: BdMO National Primary 2011/3
we know that there are 50 odd and 50even numbers in 1-100.after picking 50 balls randomly the 51 st number will be even number.( if the first 50 is odd or there will be a even number in the first fifty)
- Thu Jan 30, 2014 11:48 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2012: Primary 4
- Replies: 8
- Views: 7812
Re: BdMO National 2012: Primary 4
Yes,you are rightsowmitra wrote:@famim2011: $98886$ is also a beautiful, but, it's not the largest. $99866$ is the largest.
- Thu Jan 30, 2014 11:36 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2013: Junior 6
- Replies: 12
- Views: 8889
Re: BdMO National 2013: Junior 6
Vai Eku sohoj basai lekhen