asked 9/3/2010 There r ten spots in library and each spot has 4 tables and ten readers ar there . 10 student come into liberary and want 2 study in how many ways that they sit in d liberary so that no chair would be blank?
asked 9/3/2010 By using 1,2,3,4,5,how many 5 digit no. Can be formed which is divisible by 4,repe-tation of no. Is allowed?
