Oops, for some reason I thought you wanted even and odd digits.  To get 
first and last, you can use

     a=.10 #.^:_1  <.@o.10x^199
    'first last' =. (<.-:#a) ({. ; }.) a
    first
3 1 4 1 5 ...
    last
9 8 2 1 4 ...


On 3/25/2012 10:29 AM, Henry Rich wrote:
>      a=.<.@o.10x^199
>      'evendig odddig' =. |: _2 [\ 10 #.^:_1 a
>      evendig
> 3 4 5 2 5 ...
>      odddig
> 1 1 9 6 3 ...
>
> Henry Rich
>
> On 3/25/2012 6:19 AM, m l wrote:
>>
>> The verb<.@o.10x^n generates the n digits of Pi.
>>
>> Now, asign this to a variable, for example, a=.<.@o.10x^200 (n=200 in this 
>> case)
>>
>> How to extract the n/2 first digts and asign to another variable ?
>>
>> How to extract the n/2 last digits and asign to a variable ?
>>
>> Thanks.                                      
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