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### শেষ ৩টি অঙ্ক কত?

Posted: Wed Mar 06, 2019 12:18 pm
1x2x3x4x5x.....x2018 এর শেষ তিনটি অঙ্ক কত? (একক, দশক, শতক)

### Re: শেষ ৩টি অঙ্ক কত?

Posted: Wed Mar 06, 2019 4:45 pm
math_hunter wrote:
Wed Mar 06, 2019 12:18 pm
1x2x3x4x5x.....x2018 এর শেষ তিনটি অঙ্ক কত? (একক, দশক, শতক)
\$\fbox {000}\$

The product is divisible by \$1000\$.So,the last three digits of the product must be \$000\$.

### Re: শেষ ৩টি অঙ্ক কত?

Posted: Wed Mar 06, 2019 6:41 pm
How can I say that the product is divisible by 1000?

### Re: শেষ ৩টি অঙ্ক কত?

Posted: 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\$.

### Re: শেষ ৩টি অঙ্ক কত?

Posted: Wed Mar 06, 2019 9:36 pm
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

### Re: শেষ ৩টি অঙ্ক কত?

Posted: Wed Mar 06, 2019 11:52 pm
No need to mension.

### Re: শেষ ৩টি অঙ্ক কত?

Posted: Thu Dec 03, 2020 8:58 pm
Here 1000 is a factor of the product then it is obviously dived the product

### Re: শেষ ৩টি অঙ্ক কত?

Posted: Tue Feb 16, 2021 9:44 am
1*2*3*4*5*6*7*......*1000*.....*2018
Ans will be 000

### Re: শেষ ৩টি অঙ্ক কত?

Posted: Wed Feb 24, 2021 1:25 pm