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.
There are a total of 10 numbers and 6 of them are even (2, 4, 6, 8, 10, 12). Therefore, the probability of getting an even number is 6/10 or 3/5.
To find the probability of getting an even number, we need to determine the total number of even numbers in the given set and divide it by the total number of elements in the set.
First, let's count the total number of even numbers in the set: 2, 4, 5, 7, 9, 10, 12, 15, 18, 20.
The even numbers in this set are: 2, 4, 10, 12, 18, 20.
There are a total of 6 even numbers in the set.
Next, let's determine the total number of elements in the set, which is 10.
To find the probability of getting an even number, we divide the number of even numbers (6) by the total number of elements (10):
Probability of getting an even number = 6/10
Simplifying the fraction, we get:
Probability of getting an even number = 3/5
So, the probability of getting an even number is 3/5.