Pattern Recognition- 57

Find out the missing number in the series.

Source: Internet

Answer

18 , 46 , 94 , _ ,52 ,61

Looks like a complex number pattern. But if we consider the reverse form of those numbers then

  81,     64 ,   49 ,    _ ,   25 ,  16

(9*9)   (8*8)  (7*7), _ ,  (5*5), (4 *4)

??---- > 6 * 6 =36  Reverse form(36)-> 63

So the missing number - 63