A number from the list (2,4,5,7,9,10,12,15,18,20) is to be picked at random. What is the possibility of getting an even number? Write your number in the simplest form of fraction.

There are 10 numbers in total and 5 of them are even (2, 4, 10, 12, 18).

So, the probability of getting an even number is 5/10 which can be simplified to 1/2 or 0.5.