Answer:
the combination of the lock will be 237.
Step-by-step explanation:
Prime factor of 3 digit lock 42 = 2 × 3 × 7
So the digits which are used to unlock are 2, 3, 7
Now these three digits 2, 3, 7 when rearranged from least to greatest. Sequence will be 237.
So the combination of the lock will be 237.