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Drupady [299]
3 years ago
5

Vinay made a password that consists of 3 digits. none of the digits are the same. how many possible passwords did vinay choose f

rom?
Mathematics
2 answers:
zhuklara [117]3 years ago
5 0
Assuming the possible digits are from 0-9, there are 10*9*8 possibilities which come out to 720
In-s [12.5K]3 years ago
4 0
Assuming a 3-digit password can begin with a zero, the answer is 720. X
Hope it helps
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PLEASEEEE
belka [17]

Answer:

The answer to your questions is: 25 new teachers

Step-by-step explanation:

Data

# of students = 2000

ratio = 3:80 teachers to students

New teachers = ?

Process

I suggest to use rule of three to solve this problem

                     3 teachers ----------------  80 students

                      x                ----------------  2000 students

                  x = (2000 x 3) / 80 = 75 teachers

               Number of initial teachers = 75

The ratio change to 1:20

                     1 teacher -------------------  20 students

                     x             -------------------   2000 students

                     x = (2000 x 1) / 20

                    x = 100 teachers

Number of new teachers = 100 - 75 = 25

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