A realtor uses a lock box to store the keys to a house that is for sale. The access code for the lock box consists of four digits. The first digit cannot be 6 and the last digit must be even. How many different codes are available? (Note that 0 is considered an even number.)
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Since it cannot be 6, there are 9 possible choices for the first digit (0, 1, 2, 3, 4, 5, 7, 8, 9). Show more…
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A realtor uses a lock box to store the keys to a house that is for sale. The access code for the lock box consists of six digits. The first digit cannot be zero and the last digit must be even. How many different codes are available? (Note that 0 is considered an even number.) The number of different codes available is 450000. (Type a whole number.)
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