## Search found 22 matches

Sun Mar 10, 2019 6:23 pm
Forum: Junior Level
Topic: BDMO 2016 Regional
Replies: 17
Views: 95755

### BDMO 2016 Regional

How to solve this problem?
Sun Mar 10, 2019 11:44 am
Forum: Junior Level
Topic: BDMO 2019 : National : Junior : Pblm 05
Replies: 8
Views: 11132

### Re: BDMO 2019 : National : Junior : Pblm 05

Where can I get a clear description about "PIE" and how to solve this problem using "PIE"?
Sat Mar 09, 2019 7:21 pm
Forum: Junior Level
Topic: BDMO 2019 : National : Junior : Pblm 05
Replies: 8
Views: 11132

### Re: BDMO 2019 : National : Junior : Pblm 05

Take squares and cubes, Remove the \$6^{th}\$ powers, Giving us \$54\$ numbers to remove.Last removed number is \$2025\$ Thus we get our \$2019^{th}\$ number\$=2019+54=2073\$. PIE=Inclusion Exclusion Principle Try for smaller cases(70 or 100) to understand the solution clearly. How do I identify that the las...
Fri Mar 08, 2019 12:22 am
Forum: Junior Level
Topic: BDMO 2019 : National : Junior : Pblm 05
Replies: 8
Views: 11132

### Re: BDMO 2019 : National : Junior : Pblm 05

samiul_samin wrote:
Thu Mar 07, 2019 8:15 pm
BdMO National Junior 2019 P5
math_hunter wrote:
Thu Mar 07, 2019 11:52 am
\$2,3,5,6,7,10,11,12,13,...\$ is the sequence of integers without all square and cube numbers. What is the \$2019^{th}\$ number?
By Using \$PIE\$
Please give the full solution. How it is possible using PIE?
Thu Mar 07, 2019 11:52 am
Forum: Junior Level
Topic: BDMO 2019 : National : Junior : Pblm 05
Replies: 8
Views: 11132

### BDMO 2019 : National : Junior : Pblm 05

2,3,5,6,7,10,11,12,13,... is the sequence of integers without all square and cube numbers. What is the 2019th number?
Thu Mar 07, 2019 11:45 am
Forum: Junior Level
Topic: Area of a hexagon
Replies: 2
Views: 8182

### Re: Area of a hexagon

samiul_samin wrote:
Thu Mar 07, 2019 12:22 am
You can get a solution here.
Thanks
Wed Mar 06, 2019 9:41 pm
Forum: Junior Level
Topic: Area of a hexagon
Replies: 2
Views: 8182

### Area of a hexagon

What's the solution of this problem???
Wed Mar 06, 2019 9:36 pm
Forum: Junior Level
Topic: শেষ ৩টি অঙ্ক কত?
Replies: 6
Views: 9523

### Re: শেষ ৩টি অঙ্ক কত?

samiul_samin wrote:
Wed Mar 06, 2019 9:12 pm
math_hunter wrote:
Wed Mar 06, 2019 6:41 pm
How can I say that the product is divisible by 1000?
The product=\$1×2×3×...×1000×...×2018\$
So,it must be divided by \$1000\$.

As example \$1×2×3×4×5\$ is divided by \$1,2,3,4,5\$.
Hmm...Thanks
Wed Mar 06, 2019 6:41 pm
Forum: Junior Level
Topic: শেষ ৩টি অঙ্ক কত?
Replies: 6
Views: 9523

### Re: শেষ ৩টি অঙ্ক কত?

How can I say that the product is divisible by 1000?
Wed Mar 06, 2019 12:18 pm
Forum: Junior Level
Topic: শেষ ৩টি অঙ্ক কত?
Replies: 6
Views: 9523

### শেষ ৩টি অঙ্ক কত?

1x2x3x4x5x.....x2018 এর শেষ তিনটি অঙ্ক কত? (একক, দশক, শতক)