Question

A number is chosen at random from the set of two digits numbers from 10 to 99 inclusive. what is the probability the number contains at least one digits 2?.​

Answer 1

Answer:

$\frac{1}{5}$

Step-by-step explanation:

There are 99 - 10 + 1 = 90 numbers between 10 and 99

There are 18 numbers that have at least one two digit.

$\frac{18}{90}=\frac{1}{5}$