Find the Missing Number in the Series: 1, 4, 9, 25, ??,169

Answer 1

So SImple. its the series of SQUARE OF PRIME NUMBERS.
So the missing numbers would be 49, 121.

Answer 2

In this series, square root of previous two number is taken, added and square taken for next element. As such missing element = (3+5) ^2 = 64.
Next element = (5+8)^2 = 169.