JIPMAT (LR) PYQs

The numbers in the figure given below have been generated using some logic/pattern. Using that logic/pattern, find out the number that can be inserted in place of ?

In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons are there in the family?

If '+' means '÷', '−' means '×', '÷' means '+' and '×' means '−', then $36 × 12 + 4 ÷ 6 + 2 − 3$ is equal to