A1: On the third bomb, it's difficult but not impossible. first look at the circuit, avoid connecting the red modules, these will cause you circuit to short and explode the bomb. as you did with the 2 previous bombs take you time and connect the circuits so that all the white modules are lighted with in the time limit of 40 minutes.

A2: Same as others

A3: PS 2 Secret Service

Now to disarming the bombs. The best way to describe this activity is to have you picture looking at a small square board. On this board is a power source that looks like a lighted circle with 1, 2, or 3 end connectors on it. This power source can be rotated to connect to the rest of the circuits. The circuits look like small sections of tube or pipe, the are actually wire sections. As you connect these to the power source they will light up showing the circuit. Near each cicuit end is a small square switch. These to light up when connected to the power source, these will light up white. To avoid exploding the bomb there are red switches as well, ensure that you do not allow power to be applied to these. Once all the switches have been lit in the allotted time, you will have disarmed the bombs. Each bomb gets progressively harder with the number of circuits and switches, but if you stick with the basics you will have no problems throughout the rest of the game. This information applies also to hacking doors and computers. Good luck.
Once all of the bombs have been disarmed then you will move to the next level.