Find the probability that a number picked at random from the set(43, 44, 45, ..., 60) is a prime number.

Prime numbers = (43,47,53,59)
N = (43, 44, 45,..., 60)
The universal set contains 18 numbers.
The prime numbers between 43 and 60 are 4
Probability of picking a prime number = $\frac{4}{18}$
= $\frac{2}{9}$