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lilavasa [31]
3 years ago
8

the access code for a car's security system consists of four digits. the first digit cannot be 1 and the last digit must be even

or zero. how many different codes are available?
Mathematics
1 answer:
Stells [14]3 years ago
5 0
For the 1st digit we can use 9 of them ( it cannot be 1 ). For the 2nd and the 3rd we can use 10 and for last one we can use 5 digits ( 0, 2 , 4 , 6 and 8 ).
9 · 10 · 10 · 5 = 4,500
Answer: 4.500 different codes.
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From here, you solve! :)

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