arangosh> db.old.closedRange("age", 10, 30).toArray();
[ 
  { 
    "_id" : "old/485370019", 
    "_key" : "485370019", 
    "_rev" : "485370019", 
    "age" : 15 
  }, 
  { 
    "_id" : "old/485566627", 
    "_key" : "485566627", 
    "_rev" : "485566627", 
    "age" : 25 
  }, 
  { 
    "_id" : "old/485763235", 
    "_key" : "485763235", 
    "_rev" : "485763235", 
    "age" : 30 
  } 
]