Question

Mary had to guess at a chosen number between 1 and 10, to get to be the first in line. What’s the probability that she’ll choose the correct number?

Answer 1

`(1)/(10)`

Explanation:

1-10 is 10 numbers, only one of which is the correct one.

The resulting proportion is:

`(1)/(10)`

Answer 2

1 in 10, or 10% because there is a 90% chance she will choose the wrong number.