The access code for a security system has five numbers. How many different codes are there if repetition is allowed but the fir

Question

The access code for a security system has five numbers. How many different codes are
there if repetition is allowed but the first and second numbers have to be less than four-
and – the third, fourth, and fifth numbers each have to be greater than 4?

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Dulcie 7 months 2021-08-02T16:06:05+00:00 1 Answers 4 views 0

Answers ( )

  1. Maris
    0
    2021-08-02T16:07:40+00:00
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    Answer:

    pretty sure it’s just 9

    Step-by-step explanation:

    Let’s assume the possible numbers are 1,2,3,4,5

    There are only 3 numbers less than 4 (1,2,3) which means that there are 3*3 possbiblities out of the two spots

    There’s only 1 number greater than 4 (5) which means the third, fourth, and fifth are just 5

    which means the answer is just 9

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