Search found 138 matches
- Sun Dec 07, 2014 10:44 pm
- Forum: Junior Level
- Topic: RATIO WITH AREA
- Replies: 3
- Views: 3586
Re: RATIO WITH AREA
Triangle $\frac 14(ACE)=(ABCDEF)$. Now, as ABC+CDE+EFA+ACE=ABCDEF, so 3*ACE=ABC+CDE+EFA. Therefore, $(ABC)+(CDE)+(EFA)=\frac 34(ABCDEF)$. Now, it is said that, $A_1;B_1;C_1;D_1;E_1;F_1$ are the midpoints on AB,BC,CD,DE,EF,FA respectively. So, $\frac 14(ABC)=(A_1BB_1)$; $\frac 14(CDE)=(C_1DD_1)$; $\f...
- Sat Dec 06, 2014 1:24 pm
- Forum: Junior Level
- Topic: Factoization
- Replies: 2
- Views: 3028
Re: Factoization
Yes, I know that. But this isn't my question. I just wanted to know how I can factorize the expression.
- Fri Dec 05, 2014 7:57 pm
- Forum: Junior Level
- Topic: Cylinder probability
- Replies: 1
- Views: 5477
Cylinder probability
If a cylinder has a height of 10 cm and radius of 5 cm, then if it is tossed, then what is the probability that, it's plane round surface will fall facing the ground
- Fri Dec 05, 2014 7:18 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2013: Primary 2, Junior 1
- Replies: 11
- Views: 11614
Re: BdMO National 2013: Primary 2, Junior 1
I think there were 5 numbers. Because, after sending the first message, there will be 1 number in the call list . And in the next message, there will be 2 numbers in the call list and 3 messages in the message box(as 1+2=3). Then, going like this we will see that there are 5 numbers in the call list...
- Thu Nov 20, 2014 10:36 pm
- Forum: Divisional Math Olympiad
- Topic: Junior 2014 Cox's Bazar Q:9
- Replies: 2
- Views: 2657
Junior 2014 Cox's Bazar Q:9
x and y are two positive integers. The GCD and LCM of (x^2).y and x.(y^2) are p and q
respectively. If p2=27q then what is the GCD of x and y?
respectively. If p2=27q then what is the GCD of x and y?
- Thu Nov 20, 2014 9:12 pm
- Forum: Junior Level
- Topic: Factoization
- Replies: 2
- Views: 3028
Factoization
How can I factorize the expression below:
\[x^5 - 2x^4 + x^3 - 4x^2 + 5x - 2\]
\[x^5 - 2x^4 + x^3 - 4x^2 + 5x - 2\]
- Thu Nov 20, 2014 7:35 pm
- Forum: Junior: Solved
- Topic: Junior Divisional 2013/2
- Replies: 3
- Views: 9422
Re: Regional Math olympiad,Rangpur,2014;P:10
I think that the answer is 200. Because , the lowest number of groups can be 1 consisting of 200(all the students) and the highest number of groups can be 200 consisting 1 student each . Now, it is said that "it's not necessary for each team to have the same number of students ". So,even if there ar...
- Fri Nov 07, 2014 10:02 pm
- Forum: Junior Level
- Topic: Sequence problem
- Replies: 2
- Views: 3549
Sequence problem
What is the 68th term of the following sequence and why-
1,4,5,16,17,20...
1,4,5,16,17,20...
- Thu Oct 02, 2014 8:32 pm
- Forum: Geometry
- Topic: Triangle Inside a Square
- Replies: 1
- Views: 3005
Re: Triangle Inside a Square
I think PQ=2.19615........
- Thu Oct 02, 2014 8:05 pm
- Forum: Secondary Level
- Topic: Exponential Diophantine Eq
- Replies: 3
- Views: 3976
Re: Exponential Diophantine Eq
I think n=2 and m=1 . Am I correct?