225,289,?,441

47, 121, 169, 225, 289, 361

Which one number is wrong in the series? {:(A,B,C,D,E),(225,256,212,289,324):}

Using prime factorization method, find which of the following numbers are perfect squares ? 189, 225, 2048, 343, 441, 2916, 11025, 3549

Using prime factorization method,find which of the following numbers are perfect squares? 189,225,2048,343,441,2916,11025,3549

If 324o+289=35,441o+484=43 then 625o+400=?

Show that the following numbers are in continued proportion: 36,90,225 (ii) 48,607516,84,441

{:(7,21,15),(49,441,225),(98,882,450),(140,1302,?):}

222,441,1321,2639,7915,?