--  COMBINA returns the number of possible combinations of
--  a given number of items WITH repetitions.
--  The internal order is not relevant.
--  Use COMBIN to compute combinations WITHOUT repetitions.
--
--  For example, consider 3 elements ( A, B, C )
--  COMBINA ( 3, 2 ) returns 6 counting:
--       ( A, A )
--       ( B, B )
--       ( C, C )
--       ( A, B )
--       ( B, C )
--       ( A, C )
EVALUATE 
{
    ( "COMBINA ( 3, 1 )", COMBINA ( 3, 1 ) ),
    ( "COMBINA ( 3, 2 )", COMBINA ( 3, 2 ) ),
    ( "COMBINA ( 3, 3 )", COMBINA ( 3, 3 ) ),
    ( "COMBINA ( 4, 1 )", COMBINA ( 4, 1 ) ),
    ( "COMBINA ( 4, 2 )", COMBINA ( 4, 2 ) ),
    ( "COMBINA ( 4, 3 )", COMBINA ( 4, 3 ) ),
    ( "COMBINA ( 4, 4 )", COMBINA ( 4, 4 ) )
}