Verified answer

first give it 1 full rotation clockwise and then...

1.turn clockwise to the first number

2.turn counter-clockwise to the 2nd number(passing the 2nd number once and stopping on it the 2nd time.

3.finally turn clockwise to the 3rd number

Master locks are almost impossible to unlock without a key. They cannot be picked.

If you bought the lock in school the school probably has either the combination or a master key which can be used in the back of the lock to open it./

ugh, i've always had trouble with those :/

For me it starts Tuesday ...

sorry I wasn't any help here :/