querying varray

Hi,
I'm having trouble writing a query to return the record containing a particular 
element in the varray. In the example below, I would like to search for the id 
that contains 90 in myvarray. The query should return id=2. How can I do that?

thanks.
   

create or replace type myvarray as varray(5) of number;
/


create table mytab (
  id                     number,
  numlist                myvarray
)
/

insert into mytab values (1,myvarray(10,20,30,40,50));
insert into mytab values (2,myvarray(60,70,80,90,100));

SQL> select * from mytab;
       ID  NUMLIST
---------- ------------------------------
         1 MYVARRAY(10, 20, 30, 40, 50)
         2 MYVARRAY(60, 70, 80, 90, 100)


geraldine
--
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