Maths Code Cracker: Crack the Code and Open the Lock

It contains very interesting crack code #puzzles. Most of the crack-the-code puzzles are generally logical. However, these crack-the-code puzzles are mathematical. You need to do the mathematical calculations to solve these crack-the-code brain teasers. 
In these puzzles, you will be shown some statements which give hints about the 3-digit code. Your challenge is to guess the 3-digit code which will open the lock. So can you crack the code and open the lock?

Check Out: Crack the Code Puzzle Videos