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?

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

Answers ( )

    0
    2021-08-02T16:07:40+00:00

    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

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )