Direction : What value should come in the place of question mark (?) in the following questions?

$$ \sqrt{576}+\sqrt{841} =(?) $$

Complete the series choosing the missing number: 

1, 64, 343, 1000, _____

Complete the series choosing the missing number:

324, 108, 36, 12, ______

Complete the series choosing the missing number: 

2, 5, 9, 14, _____, 27

Complete the series choosing the missing number:

3, 15, 63, 255, 1023, ______

Complete the series choosing the missing number: 

1, 9, 17, 33, ______, 73

In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives. 

Complete the series choosing the missing number:

2, 8, 3, 27, 4, ______