A magician is performing his famous trick. He has locked his foot with 5 locks underwater and will try to open all the locks using the right keys within two minutes. The keys are floating randomly for the viewers but the magician has written codes on each one of them. Help him match the keys with the locks quickly, else the water might be dangerous for his life.
Math Skills
Subtraction of 2 Digit Number from 2 Digit Number without borrow.