## 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

Please give the full solution. How it is possible using PIE?samiul_samin wrote: ↑Thu Mar 07, 2019 8:15 pmBdMO National Junior 2019 P5By Using $PIE$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?

Answer:$2073$

- 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

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?

Hmm...Thankssamiul_samin wrote: ↑Wed Mar 06, 2019 9:12 pmThe product=$1×2×3×...×1000×...×2018$

So,it must be divided by $1000$.

As example $1×2×3×4×5$ is divided by $1,2,3,4,5$.

- 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)