Question

Lugano Leather Company makes an executive attach ́e equipped with two rolling combination locks, each one...

Lugano Leather Company makes an executive attach ́e equipped with two rolling combination locks, each one with a provision for a three-digit number. The attach ́e case is unlocked by setting each lock to produce the correct combination. Each roller in each of the two locks has ten digits ranging from 0-9.

i.) How many possible combinations are there?

ii.) How many combinations are possible if the lock on the left-hand side of the case must end with an even number and the lock on the right-hand side of the case must end with an odd number?

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