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### I can't solve it

Posted: **Tue Jan 10, 2012 11:14 am**

by **Shapnil**

A series is formed in the following manner

A(1)=1

A(n)=f(m) numbers of f(m)followed by f(m) numbers of 0;

m is the number of digits in A(n-1)

Find A(30). Here f(m) is the remainder when m is divided by 9

I can't solve this.Plz help.

### Re: I can't solve it

Posted: **Tue Jan 10, 2012 6:28 pm**

by ***Mahi***

It's your first post, and so welcome! But it seems you haven't checked out the posting rules yet.

Posted in wrong forum, topic moved.

Posted twice, so duplicate post removed.

And the problem and answer are already in a post in the forum

http://www.matholympiad.org.bd/forum/vi ... f=13&t=621 .

Please check the posting rules to make sure that they don't occur again.

http://www.matholympiad.org.bd/forum/vi ... p?f=25&t=6

### Re: I can't solve it

Posted: **Tue Jan 10, 2012 6:41 pm**

by **nafistiham**

Shapnil wrote:A series is formed in the following manner

A(1)=1

A(n)=f(m) numbers of f(m)followed by f(m) numbers of 0;

m is the number of digits in A(n-1)

Find A(30). Here f(m) is the remainder when m is divided by 9

I can't solve this.Plz help.

before posting any problem, try to find it in the forum.like as it was a national problem, u could just get it by finding in the search option.

By the way, Welcome.