Question

A personal identification number (PIN) consists of 3 numbers 0 – 9. What's the probability someone's PIN number consists of only 1 number. For example 000, 111, 222, etc.

Answer 1

Answer:
`0.34`

Explanation:

given data:

numbers contained in pin = 3

numbers pin can be gotten from = 0-9

solution:

0,1,2,3,4,5,6,7,8,9 = 10

probability the pin consist of only 1 number

`= (1)/(10) + (1)/(9) + (1)/(8) \\\\`

`= (121)/(360) \\`

`= 0.34`