a number from the list 2,4,5,7,9 ,10,12 ,15 ,18, 20 is to be picked at random what is the probability of getting an even number write your answer in the simplest form of a fraction

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

Therefore, the probability of picking an even number at random is:
Number of even numbers / Total numbers
= 5 / 10
= 1 / 2

So, the probability of getting an even number is 1/2.