Find the missing numbers from given figure?

19 ( 36 ) 13 and 37 ( 81 ) 28, then what is the value of A in 43 ( A ) 38.

Which number replace the question mark?

In the following question find the missing number?

If 18 ( 9 ) 3 and 36 ( 30 ) 5 , then what is the value of A in 19 ( A ) 18 .

Which number replaces the question mark?

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

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