Question

2. There are 10 pieces of paper, numbered

consecutively from 20 to 29, stuffed in a box.
What is the probability of choosing a prime
numbered paper if one piece is chosen at
random?

Answer 1

`(1)/(5)`

Explanation:

Prime numbers between 20 - 29 = 23 and 29.

There are 2 prime numbers out of these 10.

Therefore,

P(choose prime number) =
`(2)/(10) \\=(1)/(5)`